Dirk Bogarde is an unwitting spy in this Cold War comedy! Nicholas Whistler believes he's working as a trainee executive for a glass company when he's sent on a business trip behind the Iron Curtain, unaware he's actually on a secret mission for British intelligence. Upon arriving in Prague, Whistler soon finds himself caught in a web of intrigue involving communist agents, secret police, code words, and the beautiful Vlasta, who may be more than she appears. Starring Dirk Bogarde (Doctor in the House) and Sylva Koscina (The Secret War of Harry Frigg) alongside a murderer's row of legendary character actors, including Leo McKern (A Man For All Seasons), Robert Morley (The African Queen), John Le Mesurier (Dad's Army), Richard Vernon (The Hitch-Hiker's Guide to the Galaxy), Derek Nimmo (Casino Royale), Derek Fowlds (Yes, Minister), Roger Delgado (Doctor Who) and more.