* DeathSeeker
* DistressedDude: Those "drug and torture references" refer to ''[[{{Woobie}} somebody]]''...
* LoveHurts
* MrFanservice: With enough delicious angst to satisfy ''any'' Holmes {{Fangirl}}. Plus, check out the [[http://aleineskyfire.deviantart.com/art/A-Study-in-Regret-A-Sherlock-Holmes-Pastiche-306397423 fanmade coverart.]]
* MustHaveCaffeine
* MyGodWhatHaveIDone
* NotSoStoic: Holmes's infamous stoicism is pretty much hurled it out the window.
* {{Protagonist}}
* SurvivorGuilt:
-->"I don't matter, Lestrade; I haven't since Moriarty died! It should have been the end for both of us that day it was supposed to be! But I was a blind, stubborn fool, arrogant enough to try to cheat death, and now... ''Watson'' is dead... Mary a widow... and I... Just... ''look'' at me!"
* TearsOfRemorse: Whenever Holmes cries, it's for Watson.

!![[InspectorLestrade Inspector Geoffrey Lestrade]]
* {{Adorkable}}
* BewareTheNiceOnes
* DeadpanSnarker
* {{Determinator}}
* {{Deuteragonist}}: From recurring character in the {{Canon}} to TheHero of the story!
* FandomNod: The use of the given name "Geoffrey" for Lestrade, [[FollowTheLeader an increasingly popular practice]] which began with [[http://www.fanfiction.net/u/1460858/aragonite Aragonite]].
* TheLeader: Type II.
* NotSoStoic
* OnlySaneMan
* ReasonableAuthorityFigure
* TeamDad

!!Mary Watson ''neé'' Morstan
* AffectionateNickname: "Little Mother," courtesy of Roland
* BadassBookworm
* TheHeart
* HyperCompetentSidekick: To Lestrade -- Mary is shown to be easily as smart as the Inspector, if not smarter.
* LikeBrotherAndSister: With Lestrade early on and Holmes later in the story.
* LoveHurts
* [[BilingualBonus Multilingual Bonus]]
* PintsizedPowerhouse: Lestrade may be TheHero, but he and the other male characters make it clear that they know who's ''really'' [[TheLeader in charge,]] here!
* PluckyGirl
* TheSmartGirl
* TheSmurfettePrinciple
* TeamMom[=/=]MamaBear

!!Roland Bernier
* AllLoveIsUnrequited: He is in love with Mary but tries to hide it.
* TheAtoner
* LoveHurts: His brother Philippe works for Moran and betrays Roland.
* [[BilingualBonus Multilingual Bonus]]
* UnwittingPawn

!!John H. Watson, M.D.
* KilledOffForReal



!!Colonel Sebastian Moran
* AuthorityEqualsAsskicking: In the {{Canon}}, Professor Moriarty hired Moran for his skills, and Moran proves himself to be downright ''terrifying''.
* BigBad: Not bad for an [[AscendedExtra Ascended]] [[TheDragon Dragon]] [[AscendedExtra Extra]].
* ColdSniper
* HeroKiller: He murdered ''Watson''.

* TheDragon

!!Philippe Bernier




!!Herr Schultz

!!Dr. Joubert

!!Hannah Bessner
* TheAtoner: For her stepfather, Joubert.