This work, written in 1945, is rightfully considered one of the best novels by the master of impossible crimes. The investigation in the book is led by a rather colorful figure, Sir Henry Merrivale. This hero is found in D.D. Carr's books written under the pseudonym Carter Dixon. Already from the first line, DDK captivates the reader: “In the living room of a hotel apartment in Cairo, a girl and a young man were waiting for the phone to ring. Without being the beginning of history, this scene was the beginning of horror."