History Main / AtonementDetective

* ''Series/{{Castle}}:'' [[spoiler:Captain Montgomery]] spent his career trying to atone for his actions as a rookie, when among other things he was complicit in [[spoiler: the death of Beckett's mother.]]

* A less severe example in ''VisualNovel/PhoenixWrightAceAttorney'' is Ron [=DeLite=], a former thief, opening a security business that helped other businesses defend themselves against thieves. [[spoiler: Of course the twist is that he then turns around and sells the plans to other thieves. At least his wife's in on it this time.]]

* Richard from ''Anime/{{Monster}}''.

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* Patrick Jane of ''Series/TheMentalist'' didn't kill anyone, he just scammed many people out of ''lots'' of money as a wildly successful fake psychic. But after he offended a serial killer by doing a cold read of him on televesion, his family was murdered. Jane (eventually) became a police [[InsistentTerminology consultant]] in pursuit of a chance at revenge. He's not exactly "atoning" (or giving back the money), but he is deeply ashamed of his past actions as a con artist and seems to hope that he's become a man his dead family would be proud of.

* ''WebComic/AMiracleOfScience'': [[spoiler: The primary protagonist Detective Benjamin Prester]] is a reformed MadScientist who, after being treated for ScienceRelatedMemeticDisorder himself, now works to bring in others for treatment and protect everyone else from their rampages. Most of his work involves applying psychology to get the mad scientists into a position where they lose momentum and surrender. [[spoiler: He later loses his job after a relapse, and ends up becoming a liason between [[HiveMind Mars]] and the unmodified remainder of the human race.]]

* Mac Taylor in ''Series/{{CSINY}}'' (Former Marine)

* ''Manga/MoriartyThePatriot'''s version of Sherlock Holmes becomes this after [[spoiler:murdering Milverton]] and joins Moriarty on a RedemptionQuest.

* In Creator/LarryNiven's ''[[Literature/KnownSpace Gil the Arm]]'' stories, Gil Hamilton lost an arm in an accident in space. However, only prosthetics are available in space, as accidents in space tend to quickly ruin transplant stock and the minarchist Belters ''don't'' [[OrganTheft regularly execute "criminals" for their organs]]. He thus immigrates to Earth to take advantage of the UN-sponsored organ harvesting programme, justifying it to himself that his new arm would most likely come from an executed murderer (perhaps unaware that the UN government regularly has people broken up for ''[[AllCrimesAreEqual running traffic lights]]''[[note]]though this may have started happening later in the series, as the story where this comes up, "The Jigsaw Man", is set about a century after Hamilton's death[[/note]]). Surprise - his brand-new limb came not from a villain, but from the seized stockpile of a ''criminal'' who [[NotSoDifferent killed people for their organs]]. Lacking the moral composure to have the arm removed, he joined the Amalgamated Regional Militia ([[MeaningfulName aka ARM]]), the agency which polices illegal body harvesting... but spends more time [[EnforcedTechnologyLevels suppressing inconvenient technologies]] and [[PopulationControl hunting illegal pregnancies]].

* In the "Literature/FatherBrown" stories by Creator/GKChesterton, Father Brown (the series detective) meets and bests a thief named Flambeau, who, because he wants to atone for his crimes (Brown having stopped him from going down the slippery slope when he was going to frame someone for his crime), then assists Father Brown in solving crimes by providing information about how professional criminals work.

* In Creator/LarryNiven's ''[[Literature/KnownSpace Gil the Arm]]'' stories, Gil Hamilton lost an arm in an accident in space. However, only prosthetics are available in space, as accidents in space tend to quickly ruin transplant stock and the minarchist Belters ''don't'' [[OrganTheft regularly execute "criminals" for their organs]]. He thus immigrates to Earth to take advantage of the UN-sponsored organ harvesting programme, justifying it to himself that his new arm would most likely come from an executed murderer (perhaps unaware that the UN government regularly has people broken up for ''[[AllCrimesAreEqual running traffic lights]]''[[note]]though this may have started happening later in the series, as the story where this comes up, "The Jigsaw Man", is set about a century after Hamilton's death[[/note]]). Surprise - his brand-new limb came not from a villain, but from the seized stockpile of a ''criminal'' who [[NotSoDifferent killed people for their organs]]. Lacking the moral composure to have the arm removed, he joined the Amalgamated Regional Militia ([[MeaningfulName aka ARM]]), the agency which polices illegal body harvesting... but spends more time [[EnforcedTechnologyLevels suppressing inconvenient technologies]] and [[PopulationControl hunting illegal pregnancies]].

* ''Literature/SkulduggeryPleasant'': It's never given as an explicit reason ''why'' he became a detective, but he does have a very dark past which includes [[spoiler: having once been exactly the sort of mass-murdering supervillain he now spends his days defeating]].
* {{Literature/Dirk Gently}} becomes this in his second novel. Technically he ''was'' a detective beforehand, but only on paper; it's just a scam to swindle wealthy little old ladies with missing cats while he claims that periodic trips to the Bahamas and large bar tabs are necessary expenses for his work. One client makes the ludicrous claim that a giant monster with a scythe is stalking him, and hires Dirk to protect him, which Dirk puts his usual amount of effort into doing, i.e. none. When said client actually winds up murdered, Dirk feels uncharacteristic guilt and resolves to actually solve the case even though said client is no longer able to pay him.
* At the beginning of ''Death of a Nationalist'' Carlos Tejada shoots an unresisting suspect out of hand, because he believes she's guilty of murder. When he finds out that she was innocent, he devotes the rest of the book to trying to find the real killer. Throughout the rest of the series he tries to make amends to her family, with mixed results.
* {{Literature/ColonyMars}} has Mia Sorelli, a sort-of inversion in that she was recruited for her police experience, having emigrated to Mars to build a new life after a period of alcohol and drug use.

* Leroy Jethro Gibbs in ''Series/{{NCIS}}'' (Former Marine sniper) [[spoiler: Gibbs also killed his wife's and daughter's murderer, although he has stated that he "never lost a day of sleep over [him]".]]
* Mac Taylor in ''Series/{{CSINY}}'' (Former Marine)

* Horatio Caine in ''Series/CSIMiami'' (Kinda) He tries to catch as many murderers as subject him to SuicideByCop. Preferably ''not'' by SuicideByCop.

* He never really killed, but Sebastian Stark of ''Series/{{Shark}}'' was once a defense attorney . However, after one of his clients who he managed to get acquitted went on to kill his wife shortly after, Stark switched teams and becomes a prosecutor.
* Likewise, Patrick Jane of ''Series/TheMentalist'' didn't kill anyone, he just scammed many people out of ''lots'' of money as a wildly successful fake psychic. But after he offended a serial killer by doing a cold read of him on televesion, his family was murdered. Jane (eventually) became a police [[InsistentTerminology consultant]] in pursuit of a chance at revenge. He's not exactly "atoning" (or giving back the money), but he is deeply ashamed of his past actions as a con artist and seems to hope that he's become a man his dead family would be proud of.
* The CowboyCop protagonist of the show ''Series/{{Maou}}'' became a detective out of guilt over having accidentally killed someone when he was younger (and having been let off scot-free because his rich and influential father pulled some strings).

* In ''Series/BodyOfProof'', former neurosurgeon Megan Hunt is trying to atone for killing a patient on the table after neurological damage causes her hands to numb occasionally. She becomes a medical examiner because she can't kill anyone if they're already dead.

* A less severe example in ''VisualNovel/PhoenixWrightAceAttorney'' is Ron [=DeLite=], a former thief, opening a security business that helped other businesses defend themselves against thieves. [[spoiler: Of course the twist is that he then turns around and sells the plans to other thieves. At least his wife's in on it this time.]]
* ''VideoGame/LANoire'''s Cole Phelps was a Marine in the war. Specifically, he was TheNeidermeyer who [[spoiler:ended up leading an attack on Japanese civilians.]]

* Career con man Frank Abagnale, Jr. (on whose life the Creator/LeonardoDiCaprio film ''Film/CatchMeIfYouCan'' was based) eventually settled down and became a high-profile securities consultant who specialized in the sort of crime he used to commit. It is also notable that to this day he has never taken money from law enforcement for his consultation, even refusing reimbursement for travel expenses.
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[[folder: Real Life ]]

* Likewise, Patrick Jane of ''Series/TheMentalist'' didn't kill anyone, he just scammed many people out of ''lots'' of money as a wildly successful fake psychic. But after his family was murdered by a serial killer he offended by doing a cold read of him on television, Jane (eventually) became a police [[InsistentTerminology consultant]] in pursuit of a chance at revenge. He's not exactly "atoning", but he is deeply ashamed of his past actions as a con artist and seems to hope that he's become a man his dead family would be proud of.

* In ''Literature/{{Discworld}}'', Commander Vimes has killed a ''lot'' of people, and even though they were mostly self-defence, he's aware that he wasn't really thinking about that when he killed them. He explicitly tells TheDragon in Discworld/{{Snuff}} that he recognised him as a killer the moment he saw him - because he's used to seeing a killer's face every day in his own mirror.

* Likewise, Patrick Jane of ''Series/TheMentalist'' didn't kill anyone, but his family was killed by a serial killer whom he'd offended with his fake psychic routine. Assisting the police is his way of making amends for this error, as well as his former career of conning people.

* In Creator/LarryNiven's ''[[Literature/KnownSpace Gil the Arm]]'' stories, Gil Hamilton lost an arm in an accident in space. However, only prosthetics are available in space, as accidents in space tend to quickly ruin transplant stock and the minarchist Belters ''don't'' [[OrganTheft regularly execute "criminals" for their organs]]. He thus immigrates to Earth to take advantage of the UN-sponsored organ harvesting programme, justifying it to himself that his new arm would most likely come from an executed murderer(forgetting that an earlier Niven story had people broken up for ''running traffic lights''). Surprise - his brand-new limb came not from a villain, but from the seized stockpile of a ''criminal'' who [[NotSoDifferent killed people for their organs]]. Lacking the moral composure to have the arm removed, he joined the Amalgamated Regional Militia ([[MeaningfulName aka ARM]]), the agency which polices illegal body harvesting... but spends more time [[EnforcedTechnologyLevels suppressing inconvenient technologies]] and [[PopulationControl hunting illegal pregnancies]].

* The {{Suikoden}} series has [[spoiler: the Oboro Detective Agency in SuikodenV.]]

* In the "Literature/FatherBrown" stories by Creator/GKChesterton, Father Brown (the series detective) meets and bests a thief named Flambeau, who, because he wants to atone for his crimes, then assists Father Brown in solving crimes by providing information about how professional criminals work.

* Career con man Frank Abagnale, Jr. (on whose life the LeonardoDicaprio film Film/CatchMeIfYouCan was based) eventually settled down and became a high-profile securities consultant who specialized in the sort of crime he used to commit. It is also notable that to this day he has never taken money from law enforcement for his consultation, even refusing reimbursement for travel expenses.

* ''LANoire'''s Cole Phelps was a Marine in the war. Specifically, he was TheNeidermeyer who [[spoiler:ended up leading an attack on Japanese civilians.]]

* Leroy Jethro Gibbs in ''Series/{{NCIS}}'' (Former Marine sniper) [[spoiler: Gibbs also killed his wife's and daughter's murderer.]]

* A less severe example in ''VisualNovel/AceAttorney'' is Ron [=DeLite=], a former thief, opening a security business that helped other businesses defend themselves against thieves. [[spoiler: Of course the twist is that he then turns around and sells the plans to other thieves. At least his wife's in on it this time.]]

* ''SkulduggeryPleasant'': It's never given as an explicit reason ''why'' he became a Detective, but he does have a very dark past which includes [[spoiler: having once been exactly the sort of mass-murdering supervillain he now spends his days defeating]].

* LarryNiven's [[Literature/KnownSpace Gil Hamilton]] lost an arm in an accident in space. However, only prosthetics are available in space, as accidents in space tend to quickly ruin transplant stock and the minarchist Belters ''don't'' [[OrganTheft regularly execute "criminals" for their organs]]. He thus immigrates to Earth to take advantage of the UN-sponsored organ harvesting programme, justifying it to himself that his new arm would most likely come from an executed murderer(forgetting that an earlier Niven story had people broken up for ''running traffic lights''). Surprise - his brand-new limb came not from a villain, but from the seized stockpile of a ''criminal'' who [[NotSoDifferent killed people for their organs]]. Lacking the moral composure to have the arm removed, he joined the Amalgamated Regional Militia ([[MeaningfulName aka ARM]]), the agency which polices illegal body harvesting... but spends more time [[EnforcedTechnologyLevels suppressing inconvenient technologies]] and [[PopulationControl hunting illegal pregnancies]].
* [[Literature/{{Discworld}} Commander Vimes]] has killed a ''lot'' of people, and even though they were mostly self-defence, he's aware that he wasn't really thinking about that when he killed them. He explicitly tells TheDragon in Discworld/{{Snuff}} that he recognised him as a killer the moment he saw him - because he's used to seeing a killer's face every day in his own mirror.

* SkulduggeryPleasant. It's never given as an explicit reason ''why'' he became a Detective, but he does have a very dark past which includes [[spoiler: having once been exactly the sort of mass-murdering supervillain he now spends his days defeating]].

* Leroy Jethro Gibbs in ''Series/{{NCIS}}'' (Former Marine sniper) [[spoiler: Gibbs also killed his wife's and daughter's murderer]]

* Mac Taylor in ''{{CSINY}}'' (Former Marine)

* Horatio Caine in ''CSIMiami'' (Kinda) He tries to catch as many murderers as subject him to SuicideByCop. Preferably ''not'' by SuicideByCop.

* He never really killed, but Sebastian Stark of ''{{Shark}}'' was once a defense attorney . However, after one of his clients who he managed to get acquitted went on to kill his wife shortly after, Stark switched teams and becomes a prosecutor.
* Likewise, Patrick Jane of ''TheMentalist'' didn't kill anyone, but his family was killed by a serial killer whom he'd offended with his fake psychic routine. Assisting the police is his way of making amends for this error, as well as his former career of conning people.
* The CowboyCop protagonist of the show ''{{Maou}}'' became a detective out of guilt over having accidentally killed someone when he was younger (and having been let off scot-free because his rich and influential father pulled some strings).
* ''{{Castle}}:'' [[spoiler:Captain Montgomery]] spent his career trying to atone for his actions as a rookie, when among other things he was complicit in [[spoiler: the death of Beckett's mother.]]
* In ''BodyOfProof'', former neurosurgeon Megan Hunt is trying to atone for killing a patient on the table after neurological damage causes her hands to numb occasionally. She becomes a medical examiner because she can't kill anyone if they're already dead.

* LarryNiven 's Gil Hamilton lost an arm in an accident in space. However, only prosthetics are available in space, as accidents in space tend to quickly ruin transplant stock and the minarchist Belters ''don't'' [[OrganTheft regularly execute "criminals" for their organs]]. He thus immigrates to Earth to take advantage of the UN-sponsored organ harvesting programme, justifying it to himself that his new arm would most likely come from an executed murderer(forgetting that an earlier Niven story had people broken up for ''running traffic lights''). Surprise - his brand-new limb came not from a villain, but from the seized stockpile of a ''criminal'' who [[NotSoDifferent killed people for their organs]]. Lacking the moral composure to have the arm removed, he joined the Amalgamated Regional Militia ([[MeaningfulName aka ARM]]), the agency which polices illegal body harvesting... but spends more time [[EnforcedTechnologyLevels suppressing inconvenient technologies]] and [[PopulationControl hunting illegal pregnancies]].

* Ezekiel Stone of ''Series/{{Brimstone}}'' killed the man who raped his wife. When Ezekiel was later killed in the line of duty he was sent to Hell because, no matter how deserving of death the rapist had been, Stone's actions had been motivated by anger and the need for revenge instead of a desire for justice. The Devil sent him back to Earth to hunt down and return 113 escaped souls with the promise of a chance at entering Heaven (Not a guarantee, just the offering of a chance) if he captured all the escapees.