After a chance meeting and an indiscreet conversation, childhood friends Tommy Beresford and Tuppence Cowley become involved in a convoluted intrigue led by a mysterious man known simply as Mr. Brown.
When two mysterious deaths mar an otherwise pleasant weekend in the English countryside, unflappable flapper Lady Eileen Brent teams up with the dashing Jimmy Thesinger to solve the dastardly deeds. Their sleuthing leads them into a world of espionage and international intrigue as they discover a secret society known as "The Seven Dials" and the attempted theft of top-secret government documents.
