- Cold Jade
- Cold Justice
- Cold North
- Cold Shot to the Heart
- Cold Snap
- Cold Sun
- Cold Sweat
- Cold Tears
- Cold Trail Blues
- Cold! Steel! Justice!!!
- Colder Without Them
- Cole Club, P.I.
- Collapse
- Collateral Damage
- Collected Works: Volume I
- Collected Works: Volume II
- Collected Works: Volume III
- Collected Works: Volume IV
- Collected Works: Volume V
- Collision Bend
- Collusion
- Color of Murder
- Colored Waters
- Come Back Dead
- Come Die with Me
- Come gli Alieni Occuparono lo Stato
- Come i tulipani gialli
- Comeback
- Comme une bête aux abois
- Commissario Rebaudengo
- Compagno Luger
- Complete Humor Mystery Romance of Charles Dickens
- Complete Humor Romance Gothic of Henry James
- Complete Max Carrados & Kai Lung Detective of Ernest Bramah
- Complete Mystery Detective of Emile Gaboriau
- Complete Mystery Detective of Melville Davisson Post
- Complete Mystery Thriller of Louis Tracy
- Complete Science Pulp Mystery of Abraham Merritt
- Complete Sherlock Holmes of Arthur Conan Doyle
- Compliance
- Complicated Shadows
- Compliments of a Fiend
- Composed
- Con's Dames and G-Men: Anthology 2017
- Conceited, Maybe
- Concerto in Dead Flat
- Condé
- Coney Island Avenue
- Confession d'un pot de miel
- Confessioni
- Confessions féminines
- Confessions of a Con Man
- Confessions of a Good Mother
- Confessions rennaises
- Confidences assassines
- Connections
- Conned: A Bureau Story
- Connexion fatale
- Consciente Agonie
- Consequences
- Consequences: A Retrieval Artist Novel
- Consummatum est (Versos, canciones y trocitos de carne 3)
- Contaminated
- Contents Under Pressure
- Contrary Pleasure
- Contre toute attente
- Contrebande en Thaïlande
- Contrition
- Control
- Conway: Part 1
- Coorparoo Blues and the Irish Fandango
- Cop Killer
- Cop Out
- Copp In Deep, A Joe Copp Thriller
- Copp In Shock, A Joe Copp Thriller
- Copp On Fire, A Joe Copp Thriller
- Copp On Ice, A Joe Copp Thriller
- Copperhead
- Cops leben gefährlich. 1. Kriminalroman aus dem 87. Polizeirevier
- Cops Spies & PI's
- Coq au Vin
- Coquillages et macchabées - Presqu'île de Gâvres
- Cornered
- Corporate Asset
- Corpsicles’ Cremains
- Corpus Delicti
- Corpsicles’ Cremains
- Corpus Delicti
- Corsican Death
- Cotton Reloaded: Der Tod eines guten Mannes
- Cotton Reloaded: Nemesis - 1
- Cotton Reloaded: Nemesis - 2
- Cotton Reloaded: Nemesis - 3
- Cotton Reloaded: Nemesis - 4
- Cotton Reloaded: Nemesis - 5
- Cotton Reloaded: Nemesis - 6
- Couch Detective
- Count Me Out
- Counterfeit
- Counterfeit Corpse
- Counterfeit Wife
- Counting to Infinity
- Coup de Poker
- Coup de sang à la Marina
- Coupable
- Courage Begins: A Ray Courage Mystery Novella
- Course-poursuite sur l'Aven
- Courtes peines
- Cover Story
- Coward's Kiss
- Coyote
- Crachat
- Cracker Town
- Cradle to Grave
- Crains le pire
- Crashed
- Crashing Through Mirrors
- Crazy Rhythm
- Creatures
- Credible Witness
- Creeping Dawn
- Crestfallen
- Crime And Creeps: A Short Story Collection
- Crime and Punishment
- Crime And...
- Crime au long cours
- Crime Collection, The Buck Taylor Novels
- Crime Conspiracy: A Buck Taylor Novel