The Devil's Cinema: The Untold Story Behind Mark Twitchell's Kill Room is a non-fiction book by the journalist and author Steve Lillebuen. The book is written as a narrative and features real characters and real events.

The book is set in Edmonton, Alberta, Canada, and follows several detectives working on a missing persons case and the intersecting lives of Johnny Altinger and Mark Twitchell, an aspiring filmmaker who is under investigation for luring strangers to his "kill room," which police believe is designed to replicate elements and methods used by fictional serial killer Dexter Morgan.