The Secret of Chimneys (Used Hardcover) - Agatha Christie
Little did Anthony Cade suspect that an errand for a friend would place him at the center of a deadly conspiracy. Drawn into a web of intrigue, he begins to realize that the simple favor has placed him in serious danger.
As events unfold, the combined forces of Scotland Yard and the French Sûreté gradually converge on Chimneys, the great country estate that hides an amazing secret. . . .