The Man Who Knew Too Little Cast

Bill Murray plays Wallace 'Wally' Ritchie, an unsuspecting American who gets embroiled in a real espionage plot while mistakenly thinking he is participating in an interactive theater experience.

Peter Gallagher portrays James 'Jimmy' Ritchie, Wally's successful brother who becomes inadvertently involved in the chaotic situations caused by Wally's misunderstanding.

Joanne Whalley takes on the role of Lorelei 'Lori', a mysterious woman with whom Wally becomes entangled during his accidental foray into espionage.

Alfred Molina plays Boris 'The Butcher' Blavasky, a menacing criminal who inadvertently becomes entangled in Wally's comedic misadventures.

Richard Wilson portrays Sir Roger Daggenhurst, a British aristocrat who unwittingly becomes involved in the chaos caused by Wally's misconceptions.

Geraldine James takes on the role of Dr. Ludmilla Kropotkin, a sharp and resourceful woman who finds herself caught up in Wally's unintentional espionage escapades.

John Standing plays Gilbert Embleton, a character entangled in the chaos caused by Wally's actions and mistaken belief that he is merely acting in a theater performance.

Anna Chancellor portrays Barbara Ritchie, Jimmy's wife who gets caught up in the escalating confusion and unexpected dangers brought about by Wally's misadventures.

Nicholas Woodeson takes on the role of Sergei, a character who becomes inadvertently involved in the espionage activities that Wally unknowingly stumbles into.

Simon Chandler plays Hawkins, a character who finds himself swept up in the chaos caused by Wally's mistaken belief that he is merely participating in an interactive theater game.

Cliff Parisi portrays Uri, one of the characters involved in the espionage plot that Wally mistakenly believes to be a theatrical performance.

Dexter Fletcher takes on the role of Otto, a character caught up in the whirlwind of chaos and confusion resulting from Wally's unwitting participation in a real-life spy scenario.