When Bennett's uncle, the cantankerous amateur sleuth Sir Henry Merrivale arrives from London to make sense of this impossible crime, the reader is treated to a feast of the author's trademark twists, beguiling false answers and one of the most ingenious solutions in the history of the mystery genre.
When Henry Merrivale arrives to piece together what appears to be an impossible crime, Carr treats the reader to sensational twists, febrile tension between the closed circle of suspects and one of the most perfect solutions in the history of the genre.