
A puzzle mystery in ten chapters
Ten chapters.
Ten puzzles.
One killer.
A poisoned host. A snowed-in guest list with alibis folded as neat as napkins. And a detective’s casebook handed to you, one chapter at a time. Every chapter ends at a real puzzle — a cipher, a safe, a half-developed photograph, a servants’ maze, a final drawing-room deduction — and every answer carries the story forward.
Solve as you read — ten puzzles stand between you and the truth.
Iris Enigma · The Armchair Detective Casebooks