In The Seven Dials Mystery, Queen of Crime Agatha Christie reintroduces characters from her earlier novel, The Secret of the Chimneys. This time, it's the murder of Gerald Wade, as well as the seven alarm clocks found in his room the next morning, that set Bill Eversleigh and Eileen Bundle Brent on the trail. From a seedy nightclub to a secret formula being sold to a British Air Minister, this mystery has twists and turns a-plenty!