The Secret Adversary (1983)

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.

Genres: Comedy, Mystery, TV Movie

Stars: Francesca Annis, James Warwick, Gavan O'Herlihy, Alec McCowen, Honor Blackman