The Man Who Knew Too Much Genre Guide: Story, Cast and Movie Facts
A TMDB-backed guide to The Man Who Knew Too Much, including cast, release facts, genres and watch-provider notes.

The Man Who Knew Too Much (1956) — an evergreen reference for this movie: the essentials, the cast, where to watch and what to watch next. A little knowledge can be a deadly thing!
Where to watch
TMDB's U.S. watch-provider data lists MGM Plus Roku Premium Channel. Availability changes by country and date, so check your streaming app before watching.
Cast
James Stewart as Ben McKenna; Doris Day as Jo McKenna; Brenda De Banzie as Lucy Drayton; Bernard Miles as Edward Drayton; Ralph Truman as Buchanan; Daniel Gélin as Louis Bernard; Mogens Wieth as Ambassador; Alan Mowbray as Val Parnell
About The Man Who Knew Too Much
An American doctor and his wife, a former singing star, witness a murder while vacationing in Morocco, and are drawn into a twisting plot of international intrigue when their young son is kidnapped.
More like The Man Who Knew Too Much
- Murder at the Embassy
- Foreign Correspondent
- The Lady Vanishes
- The Deadly Affair
- The Conversation
- The Bourne Ultimatum
- Marlowe
- Sherlock Holmes: A Game of Shadows
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch The Man Who Knew Too Much?
TMDB's U.S. watch-provider data lists MGM Plus Roku Premium Channel. Availability changes by country and date, so check your streaming app before watching.
Who is in the cast of The Man Who Knew Too Much?
James Stewart as Ben McKenna; Doris Day as Jo McKenna; Brenda De Banzie as Lucy Drayton; Bernard Miles as Edward Drayton; Ralph Truman as Buchanan; Daniel Gélin as Louis Bernard; Mogens Wieth as Ambassador; Alan Mowbray as Val Parnell
Is this The Man Who Knew Too Much guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



