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- Jossed as of the season one finale.
- Working on this idea, one of the killers belongs to the 'teen' set, and is trying to recreate the Brandon James murders For the Lulz, as well as some sort of Revenge kick against the Lakewood High elite. They're responsible for the murders of Tyler and Nina, as well as the one harassing Emma on the phone.
- The other killer is older, with a personal connection to the town's backstory, trying to punish the new killer for idolizing the man who ruined his/her life, possibly coupled with a vendetta against former Final Girl Maggie Duval. He's the one who sent Emma the yearbook, mailed Maggie the heart, and murdered Rachael, so as to convince Emma that she had driven her to suicide. It's worth noting that while Nina, Tyler and Riley's deaths were bloody hack and slash affairs preceded by text messages, Rachael's was more subtle and bloodless, with greater care made to cover up the murder.
- This would explain the noted disparity between the killer's methods. The younger killer is savvy with social media, has the ability to send threatening messages to the whole student body at the press of a button, and has every reason to resent Emma and her Girl Posse. The older killer, on the other hand, is more subtle, more cold, and much more obsessed with mentally torturing his victims before he gets his hands on them.
- Better yet, both killers have exactly the same plan: Both killers know the identity of the other, and both assume that the other is unaware of his/her identity. The older killer assumes he's superior because the younger is a hot-headed kid, the younger killer assumes he's superior because the older is incredibly predictable in his goals. They're both surprised by how prepared the other one is to deal with them, and a big chunk of the Season Finale will just be them trying to finish each other off.
- Jossed. There were two killers, but they were working together the whole time.
- Since we're now halfway into the season and Jake is still alive, this can safely be Jossed.
- Moreover, the Scream franchise subverted that angle all the back in 1996.
- As of the season 1, massively Jossed. Jake survives.
- Ironically, this is Jossed in season 1 and then confirmed in season 2, where Jake is killed in the first episode.
- Brooke survived, but she's not the final girl. They played that trope straight.
- The promos after episode 7 state that the killer will be revealed, so this can safely be Jossed.
- Aaaaandd the finale aired, revealing the killers. Definitely Jossed.
- As of Season 1, Jossed. Though it is possible they'll continue the mystery next year.
- Jossed in that Will never crossed a Moral Event Horizon and Jake went along with Emma, Noah and Brooke to try saving him.
- This might be helped by the (as yet uncomfirmed) rumors that Bella Thorne will be returning next season. They might want to reuse some of the actors from the first season in different roles.
- Considering Season 1 ended on a cliffhanger, likely Jossed. Bella Thorne did return for a brief scene later in the season, but seems to be done with the show now.
- Considering Season 1 is done and this still hasn't happened, seems likely it was Jossed.
- Nina and Tyler were killed so Emma would feel increased guilt over putting out Audrey and Rachael's video.
- Rachael's death was made to look like a suicide so Emma would feel responsible.
- Ghostface taunts Emma with the impeding deaths of her closest friends, making Emma partly responsible for Riley's murder.
- Nina's laptop was placed prominently in the Abandoned Hospital lair, which Noah himself pointed out was deliberately staged for Emma's benefit. Could it be coincidence that the most obvious and easily accessible (and thus most easily exploitable) file on it was footage of Emma's first time?
- Ghostface stabs and kidnaps Will, making Emma put herself in danger to save him, which she manages to do thanks to her friends and the police arriving on time to make Ghostface flee. Ghostface retaliates by kidnapping Will again and setting him on a Death Trap designed for Emma herself to inadvertently activate, which she does, making this the second time he makes her in some way "responsible" for the death of someone very close to her.
- As of the end of Season 1, Jossed. The killer tried to directly off Emma
- To further this along, episode 6 shows Lorraine taking Audrey into custody because she and her team found her DNA inside of the Ghostface mask found at the abandoned hospital. Audrey desperately contacts Emma to ask her to break into her house, find and get rid of a specific memory card from one of her cameras, also telling her to not, under any circumstances, watch the footage. Emma decides to watch it anyway, alongside a reluctant Noah, where we see Audrey reacting very explosively when the video of her and Rachael kissing is released and promising to harm Nina, the footage ending after Audrey knocks the camera out of Rachael's hands. Emma decides to believe in Audrey's innocence after hearing her mom's history with Brandon, and she creates a fake alibi to have Audrey released (making this the second time in one episode Emma breaks the law). Audrey seems okay with Emma having watched the video, which Emma returns to Audrey, Audrey saying that afterwards, Rachael calmed her down and they went elsewhere, yet conveniently, there's no more footage from the camera to showcase that, so it's entirely possible she's lying. Even more so, after Emma creates the fake alibi to get Audrey released, the police conclude that Audrey's DNA inside the mask was a result of cross-contamination from Audrey being at the abandoned hospital with Emma and Noah, but we viewers know full well that there is no way Audrey's DNA could have gotten inside the mask, as Emma removed it from Tyler's decapitated head, while wearing gloves, and dropped it upon noticing said head, whereas Audrey never even touched the mask. So the question of how Audrey's DNA got inside the mask still remains.
- Furthermore, it turns out she did have a reason to want Rachael dead: Rachael is the only one who could possibly break Audrey's alibi for Nina's murder, meaning that if Audrey is indeed the killer, she would want to make sure that Rachael didn't talk to the police. This would fit with the relatively covert method of murder (making it look like suicide) compared to the more violent method used with Nina. After all, Audrey would naturally be a person of interest in Rachael's death, should it ever come to light that it was a murder.
- Also, her having a picture of Brandon James has not been explored further as of yet. In episode 7, she is one of only two of the teens (the other being Kieran) who doesn't go to save Will, because Noah says she's taking a midterm test and has her phone off, something we never see, as we only ever see her get in her car after saying she finished taking the test. Her arriving at the bowling alley with Maggie after having told her where Emma was, moment after Emma barely avoided the killer, would seem to imply that she's not the killer, but it's entirely plausible she's one of two killers.
- Confirmed. Audrey was the second killer, working with Piper.
- Jossed in Season 2. Audrey and Piper did correspond with one another, but Audrey actually just wanted Piper's help to make a documentary about Brandon James.
- Piper, and her as yet mysterious accomplice, are responsible for Kevin Duval's disappearance, intending to frame him for the murders Bill and Stu style. Piper mailed Maggie the pig heart, uses Maggie's Dark and Troubled Past to pit mother and daughter against each other, and uses a series of social media tactics to completely disarm Emma and convince her all her friends are lying and betraying her in an attempt to entirely alienate Emma from society before Piper finishes her off, possibly in a manner reminiscent of "Daisy" luring James to his death at the lake.
- According to the tape in the bowling alley, Daisy and Brandon did sleep together. If Maggie became pregnant and had the child, they would be around Piper's age. This could mean that Piper is Maggie's daughter and Emma's half-sister, and is taking revenge on them in the same style as the killer in the film series.
- Piper coming out of nowhere, somehow always being there to give Emma somebody to talk to, being ignored by Ghostface when he attacks Will, showing Emma the message left for her and then promptly disappearing afterwards also cast suspicion on her.
- Confirmed, and this is indeed her motivation for the murders.
- Emma: Sloth.
- She is very, very docile for someone being stalked by a killer. Her unwillingness to go to the police ended up having Riley killed. She is also easily distracted from the actual danger she's in, and prone to allowing Ghostface to play his mind games without retaliation.
- Audrey: Envy.
- The first episode suggests she may be jealous of Emma's popularity and looks, which laid the groundwork for their falling out. She starts the series resenting Emma, but ends up having to put up with her in order to catch Rachael's killer.
- Noah: Gluttony.
- He is somewhat sedantery, and gorges enough on pop culture to fuel his obsessive Genre Savvyness. He works at a video game store, a hobby long associated with just sitting around and staring at a T.V screen for hours on end. Though he seems to be a good person, his constant need to refer to pop culture alienates him from others and makes him seem somewhat entitled.
- Kieran: Pride.
- He sees himself as better for Emma than Will is, even though it is continually suggested that he's a juvenile delinquint with a violent streak. He appears utterly unfazed by the murders and the presence of a serial killer stalking the student body, and seems to think enough of himself that he can casually tell Emma he's been to jail without effecting her perception of him.
- Will: Wrath.
- He has a hair-trigger temper, can be very violent, and is clearly unafraid of threatening or harming his friends (Brooke and Jake) so long as it means preserving his own interests.
- Brooke: Lust.
- She is very attractive and very promiscious. The show implies her relationship with Mr. Branson is merely the latest in a stream of 'older men' she's been with. She isn't afraid to use sex to get what she wants, and even acknowledges that her selfish desire for sex left Riley alone to be targetted by the killer.
- Jake: Greed.
- He is primarily focused on getting his hands on the blackmail money from the moment Nina and Tyler are killed, and is the one who convinces Will to get back in the blackmail game, ostensibly to pay for Will's college tuition. Besides having borderline sociopathic tendencies, he clearly cares little for anything but his own personal gain.
- Plus, the name "Seth" is biblical; Seth is regarded as the "replacement" for the murdered Abel. It's not exactly an apples-to-apples comparison in Mr. Branson's case re: Brandon James, but it's definitely the kind of thing a literature teacher might think up.
- Jossed. While Branson isn't his real last name, he's not related to Brandon James. He turns out to be a Red Herring, with Piper being Brandon's illegitimate daughter.
- For this to work, there need to be two killers, as Maggie is with Emma when Riley gets murdered and on the way to the bowling alley with Audrey, right behind the cops, when the killer (or one of them) attacks Emma in the bowling alley.
- Jossed. Piper and Kieran are the killers, and Piper in fact tries to kill Maggie during the first season finale.
- Jossed. He's related to neither — the story about him changing his name after an inappropriate relationship with a student in another state turns out to be true.
- Jossed. He's not the killer.
- Un-Jossed and confirmed in Season 2, where Kieran is revealed as Piper's accomplice.
- Jossed. The killer is Piper, Brandon's daughter.
- Jossed. Audrey's DNA was in the mask because she was in fact the second killer.
- As of Season 2, Audrey being the second killer has officially been Jossed.
- Jossed. Tyler's decapitated head is found at the abandoned hospital.
- Piper killed Rachael. When Piper realized that Rachael could break Audrey's alibi, she decided she had to be killed. Audrey took this personally, which is why she dressed up as Ghostface and attacked Piper later. It was an attempt at revenge and Will was just in the wrong place at the wrong time. (She did help capture Will, but it was Piper who actually killed him.)
- Audrey started to realize she didn't hate the rest of the Lakewood High elite as much as she'd hated Nina. She'd started to grow closer to Emma, who was making an honest effort to atone for her part in making the video, she had nothing against Riley in the first place, and she even bonds with Brooke in the Season Finale. She came to view them all as genuine friends, so when Piper started trying to kill them, Audrey decided to take her out to protect them.
- Jossed. Audrey wasn't Piper's accomplice.
- Also helped by the fact that Piper told Emma that she had "one more surprise" to tell her - it's more than likely that said surprise was that Audrey had been working against Emma all along.
- Jossed. Audrey was Good All Along, and Piper's surprise was that Kieran was her accomplice.
- Jossed. Audrey was not Piper's accomplice and didn't even suspect her of being the killer.
- Before anyone josses this this is a theory for Season 4 which I hopes get made. This is a theory of the overall series and I didn't know where else to put it.
- Noah is a sociopathic serial killer who planned this whole thing in order to fulfill his own sick serial killer fantasy.
- He anonymously inspires killers like Piper and even Tom Martin to be killers.
- Could have set up Piper with Kieran.
- He gave them technological help with all the hacking and sending gifs of Pipers murder to all the students. He send the sex tape of Emma and Will on purpose and knew that Zoƫ send that tape to herself because he not a idiot but was the one to mass send the confession. He is shown to be good at hacking and he even has a internship with Elon Musk so it makes sense he is smart at technology.
- When he was stabbed by Kieran he said "This is not how it supposed to end." meaning that not his plan to die yet.
- He was the one to send Audrey and Eli after the killers in the final act knowing it would foil them and lead to their defeat because he still needs Emma alive.
- He was the one to kill Kieran and the guard in the Halloween episode of Season 2.
- Besides Kieran and the guard he may of already killed at least one person because the showrunners said the killer could be involved in a older murder and that murder was Rachel. The reason for killing her is the same reason the show killed her off because she wouldn't fit into the story due to being to close to Audrey but in a whole different school wouldn't connect well with the other Lakewood 6.
- The showrunners also said the killer is connected to Kieran and being former friends would make sense.
- Noah is the one to connect all the characters and always knew Emma's mom was Daisy. He may of secretly dared or payed Nina to film Audrey and Heather (being Audrey's best friend he could have figured out her relationship) and even Nina to dare Will to have sex with Emma knowing it would make Emma one of the cool girls and the popular girls future murder victims.
- Subconsciously brought the Gustavo accidentally killing his friend into view of the mayor so he will make Miguel the new sheriff since he knew Miguel helped Maggie save Brandon.
- He knows that and who Maggie is because Brandon's brother told him who he admits he met in season 1 and could have told him about Brandon's and Maggie's tree that a brother would find out about.
- Everything we see of him is real emotions and personalty because he still in the same boat of possibly getting killed since not even the killers know who he is. His relationships and love for the characters are real but his bloodlust is just stronger.
- Troy James killed the teens back in 1994 for hurting his brother but regretting it immediately when they thought he was brother getting him killed.
- He found out what Maggie and Miguel did for his brother but Brandon died from untreated wounds later on.
- He feels even more guilty when he inspires a Jackthe Ripoff in his niece and her boyfriend. He comes back for some reason (possibly his mother's health and possible passing away) and checks into a hotel as we see instead of his old house due to bad memories.
- He would be a big Red Herring in the hopefully coming Season 4.
- Dont Joss this it unconfirmed at most
- Gustavo has ASPD (Antisocial Personality Disorder)
- He has a obsession with serial killers and drawing people dead even his own friend right after he killed him by mistake. This can be his way of projecting his violent tendencies without actually hurting others besides the Accidental Murder.
- Jossed. According to MTV, Clark's role as Sheriff will be taken over by a new character. But that doesn't exclude the possibility that Lorraine will appear sometime during the season to help investigate the new string of murders.
- Jossed. Noah is shocked when he finds out is trying to investigate, though he seems willing to give Audrey the benefit of the doubt.
- Jossed.
- Confirmed, though not in the way this guesser probably meant. Audrey was motivated by loneliness, anger, and heartbreak, but all she actually did was invite Piper to help her make a documentary about Brandon James and lie to Emma about how much she knew about Piper.
- Since she was murdered in Season 2, it's likely this can be Jossed.
- Jossed. At least so far. Released titles for the probable season 2 finale is expected to be called "When A Stranger Calls".
Not only does she take a weirdly intense interest in the Lakewood Five (providing Emma and Brooke with psychological advice even though she isn't a licensed psychologist), the reveal that she was lying about being with Branson the night Jake died means she also doesn't have an alibi. She also locks Emma in her office, and soon after Ghostface taunts Emma just outside the office. She hasn't been viewed super suspiciously, indicating revealing her to be the killer would be the "shocking twist" this type of show goes for. As Dwight Schrute would say, "It's the person I most medium suspect."
- Jossed.
- Confirmed. Audrey was never Piper's accomplice and the real accomplice was indeed the killer.
- Jossed.
- Seemingly confirmed. Flashbacks show that Maggie and Miguel helped hide Brandon after he seemingly "died" and he took off into the woods. The season 2 finale has Maggie's message to Brandon telling him to stay away from Emma returned with a knife through it and Kieran receiving a phone call from someone using the voice we associate with the killers asking "Who gave you permission to wear my mask?" perhaps confirming Brandon is still alive and he's back in Lakewood.
- The Halloween special further supports this as someone dressed as Ghostface breaks into the courthouse and kills Kieran just after his trial. At the end of the special, an unknown man checks into a hotel in Lakewood under the name "Mr. James".
- Confirmed as of Season 2, Episode 10.
- Jossed and Confirmed. Will was attacked by the new killer but the killer was Kieran. The jossed part is that this heavily implied that Audrey is a killer which she isn't.
- Jossed. Audrey is not the killer.
- Jossed. Brooke gets with Gustavo.
- Jossed. By the end of Season 2, it appears that she's moved in with the Acostas.
- Jossed.
- Jossed. He was killed by the new Ghostface killer at the beginning of the Halloween special.
- And just before this, he was sentenced to life in prison.
- Potentially Jossed by Kieran being murdered in the opening of the Halloween special. But since there's a time gap between the Season 2 finale and the Special, there's the possibility there will be flashbacks to the gang's previous visits with Kieran.