- Coupable vision
- Coupe-circuit
- Coups de feu
- Courtney Case and the Dinosaur, Educational Version
- Courtney Case and the Missing Lemons
- Courtney Case and the Pobblebonk, Educational Version
- Cozy Case Files: A Cozy Mystery Sampler, Volume 2
- Cozy Case Files: A Cozy Mystery Sampler, Volume 3
- Cozy Case Files: A Cozy Mystery Sampler, Volume 5
- Cozy Cat Caper Mystery Box Set: Books 1-3
- Cozy Cat Caper Mystery Box Set: Books 4-6
- Cozy Cat Caper Mystery Box Set: Books 7-9
- Cozy Villages Of Death
- Crafty Crimes
- CRAIG KENNEDY Boxed Set: 40+ Mysteries of the Scientific Detective
- Craig Kennedy Stories
- Crash and Burn
- Crash Course In Homicide
- Crazy Killers
- Creamed at the Coffee Cabana
- Creation 2.0
- Creative Mini-Mysteries for Creative Minds
- Creepypasta
- Creole Crossroads - Episode 8
- Crestfallen
- Crime And Creeps: A Short Story Collection
- Crime And...
- Crime au « Bar du Peuple »
- Crime de première classe
- Crime Double
- Crime du Jour
- Crime Family
- Crime Hits Home
- Crime In Its Time
- Crime in the Country
- Crime Pays: The Collection
- Crime Please!
- Crime Plus Music
- Crime Scenes
- Crime Wave
- Crime Where the Nights are Long
- Crimen y castigo
- Crimen y castigo (TOC activo) (Clásicos de la A a la Z)
- Crimes dans le Yorkshire
- Crimes Impossíveis
- Crimes In The Countryside
- Crimes of Murder
- Crimes à la bibliothèque
- Criminal memory
- Crimini al sole
- Crimson Haze
- Croire aux anges
- Cronache da New Heaven
- Crooked as a Dog's Hind Leg
- Crooked Cross - Episode 5
- Crooked Paths
- Crooked Paths: A 5 Story Collection
- Crooked Roads: Crime Stories
- CROSS OVER Triple Thriller Box Set
- Cross Talk (Caught Dead in Wyoming mystery series, Book 11)
- Crossing Borders
- Crossover
- Crowded Lives
- Crown Cliff
- Crucify (Triple Threat #4)
- Cry Baby Bridge
- Crying All The Way To The Bank
- Cryptic Cove Cozy Mystery Series Books 1-3
- Crystal Caviar
- Cuentos al Alba: Tercer Mundial de Escritura
- Cuentos completos
- Cuentos para lectores sombríos
- Cuentos policiales
- Culinary Criminality
- Cult
- Cultic
- Cupcake & Murder (A Dana Sweet Cozy Mystery Boxed Set Books 1-10)
- Curious and Gifted People The Case of the Black Widow Killer And The Case of the Grimm Brothers
- Curtains
- Curtains of Blood
- Cutting Right to the Chase Vol.1: 6x1000 word stories of unusual crimes
- Cutting Right to the Chase Vol.2 - 10x1000 word stories of unusual crimes
- Cutting Right To The Chase Vol.3 - 10x1000 Word Stories Of Unusual Crimes
- Cyber Heist