When a London businessman retires early and buys a Tudor mansion, he's quite surprised—and perhaps even a little pleased (retirement being pretty boring)—to find a skeleton hidden in a secret room in the house. The skeleton appears to be more than 150 years old, so the local police leave it to the homeowner to solve the mystery. The police are much more interested in solving a local, modern murder. Somehow the two deaths are connected. First published in 1967, this is Aird's only non-Inspector Sloan mystery, and a complete triumph.
