The Man Who Knew Too Much_
"A little knowledge can be a deadly thing!"
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.
Starring
James Stewart, Doris Day, Brenda De Banzie
Box Office
$11.3M
Updated Feb 16, 2026
WHERE TO WATCH
DROPTHE_ GOSSIP
Box office
The Man Who Knew Too Much earned $11.3M worldwide on a $1.2M budget — a 842% return on investment.
Year context
The Man Who Knew Too Much was released 70 years ago in 1956.
The Man Who Knew Too Much is a Thriller, Mystery film with a runtime of 2h 0m.
CAST (20)
James Stewart
Dr. Ben McKenna
Doris Day
Jo McKenna
Brenda De Banzie
Lucy Drayton
Bernard Miles
Edward Drayton
Ralph Truman
Buchanan
Daniel Gélin
Louis Bernard
Mogens Wieth
Ambassador
Alan Mowbray
Val Parnell
Hillary Brooke
Jan Peterson
Christopher Olsen
Hank McKenna
Reggie Nalder
Rien
Richard Wattis
Assistant Manager
Noel Willman
Woburn
Alix Talton
Helen Parnell
Yves Brainville
Police Inspector
Carolyn Jones
Cindy Fontaine
Bernard Herrmann
Conductor at Albert Hall
CG
Covent Garden Chorus
Themselves
BH
Barbara Howitt
Self - Soloist
Patrick Aherne
Handyman (uncredited)
BOX OFFICE
$1.2M
Budget
$11.3M
Revenue
+842%
ROI
MASSIVE HIT
Verdict
STUDIOS (1)
DETAILS
Release
Status
Released
Runtime
120 min (2h 0m)
Language
English
Country
Rating
7.4/10 (1,523 votes)
Popularity
2
Budget
$1,200,000
Box Office
$11,300,000
Profit
+$10,100,000
FREQUENTLY ASKED QUESTIONS
What is The Man Who Knew Too Much about?
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.
How long is The Man Who Knew Too Much?
The Man Who Knew Too Much has a runtime of 120 minutes (2h 0m).
Who stars in The Man Who Knew Too Much?
The cast of The Man Who Knew Too Much includes James Stewart, Doris Day, Brenda De Banzie, Bernard Miles, Ralph Truman.
How much did The Man Who Knew Too Much make at the box office?
The Man Who Knew Too Much earned $11,300,000 worldwide at the box office. The production budget was $1,200,000.
What is the rating of The Man Who Knew Too Much?
The Man Who Knew Too Much has a rating of 7.4 out of 10 based on 1,523 votes on TMDB.
GENRES (2)
Thriller
Mystery