* SugarWiki/AwesomeMusic: The first show in the franchise to feature an original theme tune rather than a remix of the original. The result is ''epic!''
* DudeNotFunny: A literal and decidedly unhumorous version when Brooks and Devlin interrogate a man about the murder of a boy who lived in his apartment building. The man had been the prime suspect 20-something years earlier when the boy disappeared and is clearly still bitter about the bigotry and homophobia he dealt with. As such, he sarcastically confesses (NOT an example of said trope) to having killed the child, to which a thoroughly unamused Matt replies, "That's not funny, Mr. Connor."
** The man's black sense of humor returns in a more satisfying way when the real killer confesses in court and the original suspect gives him a harsh and heartfelt SlowClap.
* FanonDiscontinuity[=/=]HesJustHiding: Most fans reaction to anything after "Deal". The number of fanfics in which Matt recovers from his wounds and marries Alesha ''vastly'' outnumbers those that focus on the aftermath of his death.
* FunnyAneurysmMoment: DI Chandler comments to Ronnie and Matt that whoever cleaned a crime scene "must be a fan of CSI". Shortly after leaving the show, JamieBamber, who played Matt, guest-starred on an episode of CSIMiami. Even "funnier", after several years of playing a by-the-book cop, he was now playing a criminal. . .named Ronnie.
* FridgeBrilliance: In "Masquerade", Matt is clearly very pained as their murder suspect recounts having been raped by the victim and then stabbing him in self-defense. Then when talking with Natalie and Ronnie, he cheers her on--"Good for her for fighting back". It seems as though he's simply been given Curtis' lines from the original episode, until you recall that the girl's story is very similar to Alesha's and he's actually expressing his lingering anger over ''her'' ordeal.
* FridgeHorror: The episode "Deal" ends with Ronnie frantically trying to tend the injured Matt. The following episode begins with the now stunned Ronnie still at the crime scene, watching the technicians at work. [[spoiler: The horror is in realizing that Matt probably never made it to the hospital, otherwise the episode would have opened there. Which means realizing that he must have died at the scene. Which means realizing that poor Ronnie probably had to endure watching his partner/friend/surrogate son ''die right in front of him'', completely powerless to help--and he's ''already'' lost a partner to violence. Plus the fact that only minutes before Matt was shot, Ronnie was gushing to him about the birth of his grandson, which means that one of the happiest moments of his life will forever be associated with one of the worst]]
** [[spoiler: There's also the matter of the wife and son of Matt's friend, left widowed and fatherless, respectively, when his friend killed himself, who now have to contend with another devastating loss, probably coming just as they were beginning to recover from the first one. It's especially bad for the boy, who clearly viewed Matt as a big brother/uncle type and whose relationship with Matt would no doubt have eased the pain of losing his father--only to lose him too.]]
* HarsherInHindsight: Several in-show examples.
** In the episode "Samaritan", not only are they investigating the shooting death of another police officer, Matt muses to Ronnie that it must be tough to lose a partner, then fumbles as he realizes that he's just reminded Ronnie of his previous experience. . .and eerily foreshadowed another.
** In the episode "Confession", Ronnie states, "God forbid Matty here got himself shot, I'd be out there straight away trying to find out who did it and string him up myself." A year later, that's precisely what happened. The irony becomes even crueler when you recall that throughout the show, it was *Matt* who would flip out if/when Ronnie seemed to be in danger.
* HollywoodPudgy: Brooks is at worst moderately overweight, yet teased as though he's morbidly obese.
* MostWonderfulSound: The recurring two-note sound heard across the ''Franchise/LawAndOrder'' franchise.
* {{Narm}}: The extremely noticeable and comical StockSoundEffect of the firefighter puking near the start of the episode "Paradise" presents a [[MoodWhiplash jarring contrast to the other things happening in the scene.]]
* ReplacementScrappy: Sam, both out and in-universe. He wasn't a bad guy, he just wasn't Matt. Some of his less-than-stellar moves--sarcastically pretending to be racist, sleeping with a victim who turns out to be the killer they're after, rebuffing Ronnie's efforts at mentoring and friendship--didn't do him any favors either. It's telling that he only lasted 2 series and disappeared without any explanation.
** Kate's showing signs of this too. Her very first appearance was as the defense attorney responsible for killing 15 people by causing a train crash, she answers Jake's cell phone without his permission, then proceeds to relentlessly butt into his personal life by badgering him about going to his mother's funeral, and she foolishly--and perhaps deliberately--tips a defense lawyer off to the tactics that Jake intends to use.
* SpoiledByTheFormat: For fans of The Mothership, once you see which episode forms the basis for the UK episode, who did what and why, as well as what will happen is fairly apparent from the start. Especially bad with the "Survivor's Guilt": Once you know it's based on "Suicide Box", you know Matt wasn't shot in retaliation for a drug dealer's conviction. That said, the UK writers tend to change things enough to keep it interesting, and most episodes aired so long ago, it's virtually impossible to remember every plot twist that took place.
* StoicWoobie: Alesha. When Matt tries to comfort her following her rape, she simply hands him a videotape of her assault and asks that he arrest her attacker. Later, she manages to keep it together during the investigation into Matt's death and the prosecution of his killer, and in the episode "Line Up", she conducts a virtually flawless prosecution of a young girl's gang rape. Although she's clearly motivated by her own experience, she shows no signs of letting it adversely affect her.
** Matt himself could count. In several episodes--"Alesha", "Confession"--despite clearly being deeply personally affected by the circumstances of the cases--his friend raped, another has committed suicide--he does his best to put his feelings aside in order to support those involved and see that those responsible are brought to justice.
** Ronnie as well. There are numerous scenes in "Survivor's Guilt" and "Hard Stop" where he's clearly just an inch away from breaking down, but without fail, every time, he pulls himself back together--to the point where at the end of the latter episode, he actually buys a bottle of vodka before walking out of the store without it--and redoubles his efforts to make sure Matt's and Wes's murderers are caught and duly punished.
** And Natalie, who waits until she's alone in her office with the blinds drawn to cry over Matt's death, and refuses to break down during "Pride", despite the overwhelming evidence that her father is a killer.
* TearJerker: Steel's efforts to comfort and help a 13-year-old boy who's just pleaded guilty to murder after swallowing his barrister's argument that his genes made him a killer.
** Matt struggling to hold back his anger and his tears when he talks to Alesha after her rape. It's especially poignant considering that he spent the first half of the episode [[BerserkButton freaking out]] over her initial complaint (that her doctor had touched her inappropriately), but now needs to put his feelings aside in order to be there for her.
** Alesha begging James to prosecute her rapist:
---> "You're always saying we should fight for the victim. ''I'm'' the victim. (Tearfully) ''Fight for me''."
** Every scene in "Survivor's Guilt". Standout moments include Ronnie simply asking Matt's killer "Why?", actually empathizing with him (he was acting out of misplaced vengeance over the death of his brother) and finally reaching out to him with words that clearly referred to himself--“When someone you love dies, the hardest thing is to be left behind. You’d do anything to bring them back. You’d take their place.”, and later, in a conversation with the gunman's mother, "The police officer, who died? His name was Matthew Devlin. And he was like...''my'' son."
** Learning that Ronnie's estranged daughter named her son--born the day Matt was killed--after him.
** Ronnie going through the loss of a friend AGAIN in "Hard Stop". Having already experienced the loss of two good friends/partners, it's no wonder that this one nearly breaks him once and for all.
* WhatAnIdiot: Yes, [[spoiler:Sam]], sleeping with the "victim" was a brilliant move.