A murder mystery complete with a severed head
A closely guarded room in a Paris gambling house, a mangled body on the floor, a severed head staring from the centre of the carpet.....someone had entered that room, killed and escaped all within ten minutes. Ten minutes after the Duc de Saligny entered the card room, the police burst in, and found he had been murdered. Both doors to the card room had been watched yet the murderer had gone in and out without being seen by anyone.
John Dickson Carr (1906-1977)