Harry didn't commit suicide...he was murdered by Vogel
Dexter's curious behavior in Season 8
At some point in Season 8, a motherfucker will be surprised.
Doakes is a Time Lord and he regenerated into Quinn.
One way or another, Dexter will survive the series finale.
Dexter's insanity will be explored in the final season.
Dexter will be tried in court in the final episode of the series and WIN!And it'll be before a jury (upon his confident request to a dumbstruck defense whose convinced he just signed his own death penalty) which, after he proudly confesses to all his kills and delivers a powerful speech on the ineffectuality of the criminal justice system, the monstrous acts of the people he killed, the need for someone to take charge when the law won't do anything, his own effectiveness in removing some of the most heinous killers from the streets and perhaps culminating in a line about how even a psychopath, with great mentors like Harry, can find a place in society and contribute, the jury, with support from millions of BHB fans who agree that heinous killers who escape the law ought to be killed and to the utter shock of the judges and attorneys, will rule him "Not Guilty" of murder and release him back to the streets amidst thunderous applause with full support for future killings. Cue a media frenzy of the first nationally sanctioned serial killer whom people everywhere admire. Truth in Television when you consider Dexter's real world fans.
Dexter commits suicide in the final episode of the seriesAs the show goes on and on, we see that Dexter definetely is not emotionless, and cares a great deal about those around him (it's possible that even Dexter himself is realizing this). Perhaps near the end of the series Dexter will develop a conscience about killing, or will come so close to his loved ones finding out about his secret life that he will orchestrate his suicide in such a way as to take down the final series' Big Bad in a way that both kills the Big Bad and makes Dexter's suicide look like a murder. He will do this to protect the minds and lives of his children and Deb.
Trinity is Barney's father from How I Met Your MotherObvious facts (AKA John Lithgow-ness) aside, Barney's father Jerry has hints of a more exciting past life, and his picture-perfect family does seem eerily reminiscent of the initial portrayal of Trinity's family, right down to the estranged much older child from a past relationship. Alternatively, they're an alternate universe version of the same family. Grand Finale. Dexter will be mortally wounded while attempting to subdue a victim. He manages to kill him in the fight, but he is slowly bleeding to death. Dexter manages to drags himself to his kill room, but the blood loss will make him hallucinate that all of his friends, enemies, and loved ones are coming to judge him for his crimes. The last one will be Rita. Think about it. It would be the perfect way to bring back not only Rita, but also Doakes, Brian, Trinity, Miguel, and maybe Lila.
Quinn dies at the end of season 5 due to Deb's CurseSeriously, how does she still pull men when the last 3 of the 4 she dated were killed or skinned? The only two that (we think) survived were only in like 3 episodes. Quinn dies, and this troper bets Dexter does it.
Chickey Hines taught Brian to kill, and also slipped the idea of a 'code' to Harry in the first place.The seemingly 'innocent' Chickey Hines has been behind nearly everything all along, for decades. It was he who tipped off the drug dealers to Laura Moser. Harry adopted Dexter before he could, but he got to Brian in his early adult life and taught him how to kill and get away with it, but it was too late to instill in him the idea of a code. However, years before he did manage to slip the idea of a code into Harry's mind one night late at a bar. His goal was always to damage two children and train them to be the perfect killers, the keep the streets clean of the monsters that he didn't he the guts to take out himself. Unfortunately for him, this all went afoul when Miguel Prado saw him for the monster he was and took the opportunity to put him behind bars, even if he didn't commit that particular crime. However, he'll be back. Dexter will have to meet him someday, and there will be blood.
Dexter is Dexter from Dexter's Laboratory.See the WMG page for details.
Captain Matthews is....somethingNo idea what, exactly. Season 4 painted him in a darker light than before, but there's always been something kinda off about him. He's always known more than he shares. He knew Harry killed himself (well, that's what's been established so far at any rate). He apparently knew who Laura Moser was and knew about the ice truck killer connection to Deb and Dexter at least as early as the end of season 1. And he's gone from being antagonistic towards La Guerta for legitimate reasons (her political maneuverings) to just being sinister and petty (seriously? Trying to screw her over for having a relationship? Because she's 'arrogant'? Wow. It doesn't help that La Guerta has been developed to the extent that she's lost a lot of the bitch she had from season 1, but even if this had come up in season 1 this feels like real overkill). So....just how far does the captain matthews rabbit hole go? Consider that question and it'll lead you to some interesting places. If he knows about Brian Moser...does he know about Dexter? Is it more than just plot convience that lets Dexter escape an FBI manhunt and kill a DA one year later without being caught? Was there an ulterior motive for the captain's insistence that Neil Perry was guilty of the ice truck murders despite La Guerta's protests (was he really taken off guard when it blew up in his face? He recovered rather spectacularly well from that blunder. Almost like he was prepared to roll with it....). Was Harry really helpless to deal with Dexter's urges any other way aside from his code, or did someone else have a hand in shaping the serial killer's serial killer? For that matter, when Harry was having second thoughts about what Dexter had become, did he really turn to suicide, or did someone decide to 'help' him along that road when he voiced his protests and desire to get Dexter real help? And then too....isn't it interesting that the drug dealers knew to look in the park that day to find Harry and Laura, or that they knew enough to say Laura was informing and sleeping with Harry? Did someone give out information to the drug runners that led to Laura Moser getting the chain saw and Dexter getting a dark passenger? Just saying, Season 5 could bring up some interesting explorations of a man who has gotten progressively more suspicious as the seasons pass.
Rita is going to find Dexter's blood-slides.It will be the cliffhanger to end all cliffhangers. Then Dexter will tell her that the slides are mementos from especially hard cases of his. Rita will choose to believe him since, well, she is kind of stupid that way.
Dexter is an AU counterpart of Light Yagami.Both are Serial Killer Killers who adhere to a personal moral code, and also come from police families, have a Morality Pet sister, a traumatized Beard girlfriend/wife, and are very good at Machiavellian planning and hiding their gruesome hobbies. And they've gained massive amounts of fans for their vigilantism.
Dexter is an alien.One preview has someone say something along the lines of "Dexter is an alien! Oh wait, I just gave it away". This is not a joke. It's a hint of what's going to be shown at the end of season four.
Someone will write Dexter/Miguel slash fan fiction.All thanks to this:
The Ice Truck wannabe Neil Perry is the same Neil Perry from Dead Poet's Society.
Dexter is Number 16
Harrison will grow up to be a Serial Killer.
Alternatively, Harrison will NOT grow up to be a Serial Killer.
Deb finds out about everything.
Both Arthur Mitchell and Rita will reappear in season 5.In Dexter's mind, of course. (Mainly because both are awesome characters.)
It wasn't Trinity who killed RitaThe timing doesn't make any sense, she doesn't fit the pattern and we don't even know completely if Trinity knew where to find her. Suicide is actually more believable.
The ghost of Harry is actually how Dexter imagines the Dark PassengerPretty much spent all of season 4 is spent telling him to stay away from his family and kill properly. Even considering what we know about Harry, this doesn't sound like what he would advocate.
Masuka killed RitaHe seemed to take Angel getting stabbed and Deb being shot worse than anyone else in the department and was absolutely crushed when Eliot kissed Rita. He could have killed her out of anger or to 'protect' Dexter, and would know to copy Trinity's MO.
Dexter isn't really a sociopathGot the idea from Dexter's IJBM page where people discussed the sketchy approach to the whole illness as written by writers who aren't sociopaths. Dexter has the urges to kill, but isn't an actual sociopath or else Harry wouldn't have to emphasize emotional detachment in his code. Harry didn't want any emotions to get in the way so he convinced his son of his sociopathy and left Dexter to grow up with a massive sense of denial. He actively denies having emotions throughout the series, much despite the contrary and only starts to give in as Harry's Code slips up more and more, culminating towards the end of Season 4.
Doakes really was the Bay Harbor Butcher.Ok, stay with me. Dexter is delusional, and the show is from his perspective, and at least the first two seasons are his recollections of past events. He's compelled to figure out who committed murders, but doesn't actually kill the murderers, he only imagines that he does (hence why he never gets caught, and coincidences always work out in his favor). Doakes really did go nuts and kill some escaped serial killers, but in much smaller numbers than Dexter imagines himself killing, and after Doakes got caught and killed himself in the explosion, Dexter's deluded mind inserted himself into the place of a real-world equivalent of what he imagined himself to be. He actually did kill Freebo and Oscar, but it was in self-defense, as he told Miguel, and then Miguel really did kill Ellen Wolf (this may have forced Dexter to kill Miguel, or some other circumstances may have happened). In Season 4, he really did figure out who Trinity was, and started following him around, as part of his delusion.
That cop(I forget her name) killed the headless womanShe was having an affair with the woman's husband, then killed her in a fit of jealousy. She dressed up the head in the style of the Santa Muerte cult, then made sure she was first on the scene in order to mislead the police. When the husband commited suicide she was the first responder again in order to push the investigation away from herself.
The "Take It Now" self-help deal is part of the ring Boyd Fowler ran in.Considering it was a focus of Boyd's character for two episodes, it's entirely possible. It has a pretty strong message that obviously spurred Boyd on.
Dexter is seeing The First Evil.Dexter suffers from trauma, repressed memories and a cold detachment from emotion. This never results in hallucinations until season 3 when he starts seeing the "ghost" of his dead father. But that's only because The First is manifesting as Harry. The First's motivation is that it needs time, possibly millennia, to build up its army again. Hence it is biding its time and in the process decides to mess with severely psychically damaged people. You know, for shits n' giggles.
Lumen will be a villain and will be killed before the end of season 5.Because she knows too much for the show to go with her. Everyone who learns who/what Dexter is doesn't last long, and it's because they always turn out to be antagonists. No, Dexter & Lumen cannot become partners in crime, as that was so thoroughly deconstructed with Miguel. There are always two villains in the Showtime storylines, one a close personal villain for Dexter and the other a general villain for the police. (Lila & Doakes/BHB, Miguel & The Skinner). In season 4 they were both the same person, but still fall this way to reflect Arthur Mitchell's double life, one as the notorious Trinity Killer and the other as Dexter's new role model Arthur. And like Lila and Miguel before him, Arthur's personal life is only subverted in the final few episodes. We have the serial killers for this season in the beheader(s), it is too late in the story to introduce a new major character, and so the personal villain will be Lumen.
Dexter will die in the series Grand FinaleLumen will stay with Dexter and somewhat become his apprentice, something he couldn't achieve with Miguel. They for what ever reason have a falling out, and Lumen realizes that Dexter himself needs to die. The last scene of the series will be him on his table looking at old clippings of the Bay Habor Butcher, being stabbed in the heart. That or it will be a Distant Finale with Harrison, due to Generation Xerox, ending Dexter's life everything coming full circle.
Debra will get to know about Dexter's "hobby".There are several plot elements that seem to build up to this, like Debra shooting a man without feeling remorse and talking to Dexter about it, or that guy who investigates Dexter for Quinn. (In the books, Debra knows from book 2 on.)
Dexter will take on an apprentice...Sometime after the events of the series, Dexter will have holed up in some part of the country, doing his work despite it's having destroyed his life. In that time, he will encounter a young man with a darker past than his, who is struggling with homicidal intentions and needs to be taught when is the right time to let these urges come to the surface. He'll be living under an alias at that time, the legacy of his family's long history of law-dodging, but rudimentary investigatory work will reveal his birth name as Shane Botwin
Dexter's first victim was a hithertofore unknown sister, Deedee.
Inland Empire (or parts of it) is Lumen's background story, or the story of another of Jordan Chase's victims, told by an Unreliable Narrator.No real reason, but Nikki Grace would also fit the profile of Jordan Chase's victims. It doesn't really make sense, but then, considering Inland Empire, what does? (This Troper actually got the idea to this theory when, in one scene of the last Dexter episode "In the Beginning", Lumen was shown watching the DVD recordings of her own torture, a scene somewhat similar to some Inland Empire scenes.)
The police are going to capture Lumen in the season finale and she is going to go down alone for the murders without ever revealing that Dexter had helped her.Because I think it would be a pretty good twist.
Debra will kill Jordan.
The guys of Jordan Chase's Circle are actually the kids from South Park grown up.
Dexter would have grown up to be a violent criminal anyway.Even if Dexter's mother hadn't died in the shipping container, she probably wasn't the best mother, being a crackhead who took her two little boys to a dangerous drug deal even though she feared for her life at the time, and his father was a criminal who'd done jail time, if I remember correctly. Harry probably did a better job raising Dexter than his biological parents would have. It's not unlikely that Dexter would have grown up to be some kind of criminal, given his circumstances, even if he'd never been traumatized by his mother's murder.
Lumen never existed.She was actually a delusion that Dexter created in order to cope with Rita's murder. On the heels of his failure to protect his wife, along comes this blond victim who not only serves as someone Dexter can rescue like he couldn't do with Rita, she also fulfills Dexter's fantasy of being appreciated for his "work" and being treated like a hero. Not only that, but when he is fully revealed to her, she accepts him implicitly, offers him understanding and love, and is the "light" to his dark. He also helps her to get rid of her darkness like he is unable to do with himself. Ultimately, however, she leaves, because Dexter can't truly bring himself to believe that anyone can accept him for who he is, and he realizes that their relationship was nothing more than an imagined wish.
In the series finale...
The nanny will end up raising Harrison.Dexter will either a) realize that he cannot give his son the life that he wants for him, and will ask the nanny to Give Him a Normal Life, or b) get caught or killed by the end of the series, in which case the likely candidate for who gets Harrison would be Deb, who, let's face it, isn't really parent material and decides the nanny would do a better job than her at raising the child.
Special Agent Frank Lundy was once Special Agent Dale CooperHe escaped the Black Lodge and continued his work for the FBI. Notice Special Agent Lundy is chipper, upbeat, has precise unique methods and is obsessive about food. He even ends his time on Dexter by saying he is going to work on a case in Portland, OR. Back to where he started...
Debra already knows about DexterShe's repeatedly shown to be an extremely skilled detective. She would have figured it out by now, what with Dexter showing up at Trinity's house without a police vest only to have his wife murdered by Trinity hours later. And she knows that he was related to Brian Moser. Then there's Quinn's theories about Dexter in the fifth series, which must tip her off slightly. We see how suspicious she is when she meets Lumen, and it's right around this time she decides that there are a couple committing the murders. She lets Dexter and Lumen go and never asks to see their faces so she can continue to feign ignorance around Dexter, because she doesn't want to become an accomplice.
Lumen will return at some pointHer departure seemed unnatural. And I could be wrong, but I'm pretty sure that her Dark Passenger leaving like that is not how it works.
There will be an episode focusing on the kill-shirt.Because Dexter's kill-shirts are awesome. The episode will start with the kill-shirt being destroyed, accidentally set on fire by Masuka when Dexter was trying to hide it. Then, flashbacks will show the development of the kill-shirt throughout the years (times it saved his life, Dexter's victims complementing him on it before they died...), eventually leading to its origin: it was a birthday present from Deb. At the end, Dexter will say a tearful goodbye to his kill-shirt...then go to his room and reveal that he has a closet full of them.
Colin Hank's character and his sister will be duo killersand it will be used in comparison to Deb finding out Dexter's secret. There will ptobably be a moment of one of them wondering if they'll become that way.
The entire show is told in flashbackThe finale episode reveals either that Dexter is recounting his entire life and career to a reporter as he sits on death row, or he has made it to a ripe old age, and has written a memoir about his 'real' life, kinda like an OJ Simpson "If I did It" sort of thing. The latter, of course is a somewhat happier ending and thus, is obviously not going to happen. The only flaw I see in this is the rather convoluted form the show takes on. Having flashbacks within Flasbacks is strange.
Gellar (the character played by Edward James Olmos) isn't a real person.He's Travis' Dark Passenger. Until now, we haven't seen him do anything himself. He just gives instructions to Travis, who does all the real work.
Gellar will replace the victim Travis set free with Travis' sister.Gellar will probably not be very happy with what Travis did. We have seen how he punishes Travis for even small deviations.
Gellar plans, and has planned all along, to make Travis his last victim.
Lewis (Masuka's intern guy) will turn out to be Brian's son.The ages fit, they look rather similar, and it would explain why Lewis bought the hand, and why he appears to have sent it to Dexter, and just his general creepiness. Also, it would be another reason for them to have Brian return for an episode, as opposed to just Rule of Cool. If they're going to have one of his relatives pop up, they'd need to remind the audience of who he is.
Dexter's response to Deb seeing him kill TravisDexter will trying to come up with an excuse like he always has in the past but will fail utterly. Deb will make him make it look like Travis killed himself because she needs to close the case. We will then get a full season of Deb having a moral dilemma over whether or not she should let Dexter keep doing what he does.
The "endgame" for seasons 7 & 8:Louis is obviously the big bad for season 7. Judging by the evidence, he will either be some kind of copycat killer or an anti-Dexter vigilante. Deb will have yet another drawn-out internal struggle about her independence and her brother, resulting in the decision that he's gotta go. The final season will be similar to Season 2, where Dexter is the main villain, and it will play out as a chess game between Dexter and Deb, which Dexter will ultimately forfeit.
The first words Dexter will say in season 7..."Debra, get out of my church!"
The next season will be a Dexter / CSI: Miami crossover.Horatio Caine: "Seems like the blood of Christ..." *puts sunglasses on* "...is not the only blood in this church." - YEEEEAAAAH!
Ghost Harry will be Dexter's final victim.In a show this rife with embarrassingly obvious symbolism, metaphorically putting Harry on Dexter's table seems inevitable. If they're going to make the last kill a big one, that'd be the way to do it.
Another "endgame" for seasons 7 & 8:At the end of Season 7, Deb will commit suicide, just like Harry did. Season 8, if it is indeed the final one, will be about Dexter fully giving in to his darkness (à la "Nebraska") and going on a rampage, which leads to pursuit by Miami Metro. You can't tell me that Season 4's line "If Deb dies, I'll be...lost" didn't sound like foreshadowing.
"Marshall" from the movie Mr. Brooks is a Dark Passenger.Now that we know that other people than Dexter can have Passengers too, it might be possible.
Season 8 will take on a 'dark-vacation' themeEverything is presented as normal, his blood slide and documentation stash will be disposed of, he'll take his son around the world. But Debra won't be the same and this'll affect Dexter. There won't be a serial killer -maybe-, instead, trying to understand his dark passenger. This will go bad at some point, and wind up publicly exposing an urge to murder.
There will be a Lumen spinoff series after season 8.If Dexter should be caught at the end of season 8, the new series will begin with Lumen learning about (or even watching) his execution - which will somehow wake her own Dark Passenger again.
Dexter is the fetch of Dexter from Dexter's LabBasically Dexter's Lab Dexter was stolen from just after that series ends and replaced with a sociopath fetch from Changeling: the Lost
Someone in Miami Metro will die before the end of the season.The writers have to shock us by the end of the season by having something BIG happen before the final season and seriously, there are WAY too many of those people. The numbers have to be thinned anyway. Who's it gonna be?
Season 7 will end with an epic Cat Fight between Hannah and Debra.Just for the fun of it.
In Season 8, Dexter will be in prison.But there will be yet another serial killer out there, and they will need Dexter's expertise both as an analyst and as a killer. So, they'll consult him for advice. It'll have several Shout Outs to Silence of the Lambs.
Dexter's gonna kill Hannah.
Hannah will take the fall for Dexter in the Bay Harbor Butcher investigation.Possibly after Deb sets her up for it. La Guerta and Mathews have gotten too close to the truth to plausibly back off now so someone has to go down and Hannah probably isn't going to stick around for season 8 anyway.
Dexter is a vampire.If you ignore the fact that Dexter is not a vampire, he's a very stereotypical vampire. The show even uses a lot of typical vampire tropes.
The final season takes place in prison.The next-to-last season will end with Dexter being caught. The final season will open with him being sentenced. He's expecting death...he gets life. You see: he confessed everything, and the jury interpretted this as a sign of remorse. So, he finds himself being targetted in prison for an episode or two...until murderers with guilty consciences start coming to him, and rallying around him. Dexter unexpectedly finds himself the leader of a prison gang, teaching them the Code, and using them to systematically wipe out the most dangerous killers before they can be paroled. In the final episode his gang breaks him out...against his will. After they have him out they tell him that the world outside still needs him, and the show ends with him running off, and saying "tonight's the night."
The Brain Surgeon is like Dexter.If I recall right, it's been announced that Season 8's main serial killer, The Brain Surgeon, removes the part of the brain that feels empathy from his victims, and Dr. Evelyn Vogel believes this killer is a past patient of hers (This is all from memory, so if either of those are wrong, the theory kinda falls apart). I think that The Brain Surgeon is like Dexter, a killer who hunts those that have slipped past the cracks of the justice system. Unlike Dexter, though, he wants people to know of their dastardly deeds, so he hints at it by removing the part of their brain that processes empathy, pointing out "They lack empathy. They're killers!" After all, Vogel did apparently help Harry form the Code, according to some info. Further more, judging from some episode summaries, Vogel will have him kill some other murderers. Perhaps, this is what she's doing with The Brain Surgeon, which would explain why this would happen around the same time she comes to Miami. However, she wants him dead due to the fact that he's now displaying the kills as trophies, rather than disposing of their bodies. So, she comes to Miami Metro, and while making it seem like she's trying to find the killer with the cops, her true reason is so she can have Dexter kill him and cover her ass. Also, Dexter will end up killing Vogel, either because she tries to have Dexter kill Debra when she discovers she killed Maria, or because he thinks she's bad for having people kill for her. Although it would be hypocritical of him to do that, Dexter isn't above hypocrisy. This next part may sound a bit far fetched, but Dexter and the Brain Surgeon may team up to kill Vogel, and then after her death, one will kill the other, and the series will end. Or perhaps the Surgeon will harm Debra when he finds out she killed Maria, which results in Dexter killing him and ending the series. Or, Vogel is the Brain Surgeon.
Vogel is a reformed psychopath.She is this season's foil to Dexter: someone with hallmarks of a violent psychopath and/or sociopath who has learned or been taught to use those psychological differences in constructive ways. Dexter has long seen himself as someone like this, but season 7 really made it clear that Dexter's condition is as much the result of Harry teaching him that he is a killer, that he can't help being a killer, that he should kill and do so in constructive ways. In contrast, Vogel was able to seek help and keep any violent urges under control, and applies her unique mindset to understanding, finding and rehabilitating individuals like herself.
Vogel is a genderflipped parallel universe version of Hannibal Lecter.Both are from Germany (or at least Vogel has a German name, the German word "Vogel" means bird). Both are therapists with a special interest in the criminally insane, who use unorthodox methods. And apparently, both like to manipulate people.
Cassie is Hannah.She's had reconstructive surgery and returned for Dexter (as his lover or his killer).
Deb is the Brain Surgeon.So I've seen barely any of Season 8 and I imagine this is impossible. Just think it'd be funny.
Cassie's killer is Jamie.Someone framed Zach. The only one who personally benefits from that is Quinn — he's been the one insisting (correctly) that the kid is a killer. But framing Zach doesn't fit with Quinn's other actions, such as bringing in Oliver to see if he recognized Zach's picture. It also contradicts the forensic evidence that Cassie knew her attacker (she'd met Quinn, but only briefly). So Quinn didn't do it... but maybe someone else did it for his sake. Who wants Quinn to succeed? Who did Cassie definitely know? Who works next door, but was conveniently absent and thus not a witness? Who might even have been annoyed with Cassie for (apparently) not being interested in her wonderful but lonesome boss? Jamie. She's never seemed evil before, but psychopaths aren't supposed to; this is the kind of twist the writers would surely love. On the other hand...
Cassie's killer is Deb.This is more of a stretch, but think about it. Deb has seen twice that she can get away with murder; Vogel's even helping her suppress her guilt. Right now she's going crazy over Dex and Hannah. It's heavily implied that she's still hung up on him. If she's going to lash out, why not at another love interest of his? Deb is someone else Cassie knew, though they'd only met once. What's more, Deb knew Cassie really was attracted to Dexter, and she didn't seem thrilled about it. Finally, like Jamie, Deb wants to see Quinn succeed. If she was going to kill someone anyway, why not finger Zach for the crime to help Quinn out? (More details here.)
Vogel is the Brain Surgeon.
This has been the fantasy of a lonely lumberjackThe ending didn't show Dexter's life after he faked his death. Instead, it showed us the reality - The entire series has been the fantasy of a lumberjack who doesn't have anyone he can connect to... He should write a book or something. Been thinking about this more, and it makes even more sense if you think about the very last scene. This is one of the only times Dexter doesn't monologue, so it could be interpreted as the story no longer being 'narrated'. This is the only way the last couple seasons make sense. He had such a good story going in his head until he could not figure out how it should end and it all fell apart.
Joey Quinn, Vince Masuka, Jamie Batista, Thomas Matthews, and everyone else not seen at the end perished during Hurricane Laura.Why else weren't they seen in the background after it ended?
Lila is a vampire.
Dexter is in the same universe as Don't Trust The B—— in Apartment 23.Rudy's apartment is later inhabited by Chloe.
The Ice Truck murders are related to the 23 enigma.
Dexter is a game of Dungeons & Dragons.Here are a few versions of my theory: 1. Dexter Morgan's initials are DM. He is actually a D&D player who has no friends and has to act as the Dungeon Master in addition to playing the game himself. 2. Deb Morgan is the Dungeon Master, with Dexter being a player's serial killer character trying to survive and keep his identity a secret from other players or NPCs. 3. The whole show is Dexter from Dexter's Laboratory overseeing a game of Monsters and Mazes. 4. Same as #3, but with Dee Dee as the one in charge and Dexter as one of the players.
Dexter is in the same universe as Saw.In the season 2 episode "Waiting to Exhale," Dexter says, "I feel like a Jigsaw puzzle missing a piece." That episode took place in early 2007, so it is possible that Dexter might have been tested by Jigsaw's apprentice Hoffman while he was on the run during Saw 3D. Dexter survived the game, but not without Hoffman cutting a puzzle piece out of Dexter's skin. Though Dexter still continued to kill, he was not tested again because Hoffman was locked away forever.
Dexter is an alternate universe's version of Batman.
The patient who kept repeating, "She knows," had met Lila.After Dexter had coffee with Lila and had a conversation about the "Dark Passenger," Dexter's narrating voice said, "She knows." The man in the hospital must have had some traumatic experience after meeting Lila.
Frank Lundy is a god.Deb was right.
Dexter would have turned out worse if his mother had not been murdered.He would have grown bored with his normal life and killed anyone willy-nilly without any code to limit himself.
Dexter is an alternate universe's version of Series/Psych.
Dexter was inspired by The Boondock Saints.He heard about how they only killed bad people and decided to do the same through his own methods.
Dexter is in the same universe as Pulp Fiction.Dexter has speculated that his luck may be due to "divine intervention."
The drawing of Jesus was a form of divine intervention.The boy who was in the trunk really did see Dexter and drew him perfectly, but divine intervention changed the drawing to look like Jesus so that Dexter could keep avenging people.
Dexter is a spinoff of The Truman Show.That is why Dexter is so lucky. It is the writers who keep him from getting caught to keep the show going.
Vince Masuka is a cannibal.He once said, "There are more cannibals in Miami than you realize." What they did not realize was that he was included.
Albert Chung is Vince Masuka's long-lost twin.It is no coincidence that they look alike. Vince's twin brother was separated from him at birth and grew up to become Lisa Morton's murderer.
Dexter's Dark Passenger has another name...And that name is Simon.
Jordan Chase and Vince Masuka are Sherlock Holmes.Johnny Lee Miller, who portrayed Jordan Chase, portrays Sherlock Holmes in Series/Elementary. When Jordan died at the end of season 5, Sherlock Holmes' soul went into Vince Masuka's body, hence why Deb calls him "Sherlock" in the first episode of season 6.
Miguel Prado was trying to have an affair with Dexter.The real reason that he said that he would fuck Dexter in ways that he could not imagine: he was upset that Dexter stopped letting him get close to him. He was sexually frustrated and fixated on Dexter.
Dexter is an alternate universe's version of House.
Travis Marshall is an alternate universe's version of Norman Bates.He imagines that someone else who disapproves of promiscuous women is committing his murders.
Angel Batista is Dexter's guardian angel.There have been times in which he has helped Dexter.
Dexter really did die in the hurricane.He is his own personal Hell. And if Angel really is his guardian angel, then that is why he is not with Dexter.
Harry is a Time Lord.Dexter is not hallucinating Harry; Harry is time traveling to the future to see how Dexter will turn out. After his travels, he knows that he has to kill himself because not doing so would alter the timeline.
Dexter is a  Time Lord.He uses his own sonic screwdriver to unlock doors and break into houses. Also, since there might be a spinoff somehow different from Dexter but still including Michael C. Hall, perhaps a Dexter Who spinoff is not out of the question?
Harrison was trying to get Hannah all to himself.He somehow found out where Dexter held Oliver Saxon captive in the penultimate episode and left a clue that led Max Clayton there. Harrison knew that Clayton would free Saxon, who would then kill Deb and cause Dexter to make the decision to either kill himself or live in isolation while Harrison goes off to live with Hannah. In the end, Dexter's final boss was his own son.