Everyone on This Train Is a Suspect

A group of crime writers boards a luxury train for a festival built around murder stories, professional rivalry, and the performance of expertise. When one of them is found dead, the journey becomes a moving closed-circle investigation in which nearly everyone understands how clues, alibis, and suspects are normally arranged. The returning narrator is less interested in pretending innocence than in explaining the rules he believes a mystery should follow. That self-awareness gives the book its humor, but it also raises the pressure: writers are skilled at constructing plausible versions of events, and each passenger has reasons to control the story. The train setting keeps the cast physically close while the literary festival supplies a second layer of competition. The mystery remains playful without becoming careless, using genre knowledge as evidence rather than as a substitute for it.