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The Man Who Knew Too Much (1956)

Approved | | Drama, Thriller | 1 June 1956 (USA)
2:09 | Trailer

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A family vacationing in Morocco accidentally stumble on to an assassination plot and the conspirators are determined to prevent them from interfering.



(screenplay), (based on a story by) | 1 more credit »
Won 1 Oscar. Another 1 win & 4 nominations. See more awards »



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Cast overview, first billed only:
Brenda de Banzie ...
Ralph Truman ...
Louis Bernard (as Daniel Gelin)
Mogens Wieth ...
Christopher Olsen ...
Reggie Nalder ...
Richard Wattis ...
Assistant Manager
Noel Willman ...
Alix Talton ...
Yves Brainville ...
Police Inspector


While attending a medical conference in Paris, American physician Dr. Ben McKenna, his wife, retired musical theater actress and singer Jo McKenna née Conway, and their adolescent son Hank McKenna decide to take a side trip to among other places Marrekesh, French Morocco. With a knife plunged into his back, Frenchman Louis Bernard, who the family met earlier in their bus ride into Marrakesh and who is now masquerading as an Arab, approaches Ben, cryptically whispering into Ben's ears that there will be an attempted assassination in London of a statesman, this news whispered just before Bernard dies. Ben is reluctant to provide any information of this news to the authorities because concurrently Hank is kidnapped by British couple, Edward and Lucy Drayton, who also befriended the McKennas in Marrakesh and who probably have taken Hank out of the country back to England. Whoever the unknown people the Draytons are working for have threatened to kill Hank if Ben divulges any information ... Written by Huggo

Plot Summary | Plot Synopsis


A little knowledge can be a deadly thing! See more »


Drama | Thriller


Approved | See all certifications »

Parents Guide:





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Release Date:

1 June 1956 (USA)  »

Also Known As:

Alfred Hitchcock's The Man Who Knew Too Much  »

Box Office


$2,500,000 (estimated)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:

(Western Electric Recording)



Aspect Ratio:

1.85 : 1
See  »

Did You Know?


This may be the only surviving film of the London Symphony Orchestra leader, violinist George Stratton and Principal Cello Dennis Nisbett. See more »


When the McKennas are riding in the back of the bus the boy spots a camel out of the side window; when they then look at it out the back of the bus there is no camel to be seen. See more »


[to Drayton]
Ambassador: You have muddled everything from the start, taking that child with you from Marrakesh. Don't you realize that Americans dislike having their children stolen?
See more »

Crazy Credits

Opening credits prologue: A single crash of Cymbals and how it rocked the lives of an American family. See more »


We'll Love Again
by Jay Livingston and Ray Evans
Performed by Doris Day (uncredited)
See more »

Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

Que Sera Sera
23 May 2006 | by (Buffalo, New York) – See all my reviews

The original The Man Who Knew Too Much brought Alfred Hitchcock acclaim for the first time outside of the United Kingdom. Of course part of the reason for the acclaim was that folks marveled how Hitchcock on such a skimpy budget as compared to lavish Hollywood products was able to provide so much on the screen. The original film was shot inside a studio.

For whatever reason he chose this of all his films to remake, Hitchcock now with an international reputation and a big Hollywood studio behind him (Paramount)decided to see what The Man Who Knew Too Much would be like with a lavish budget. This is shot on location in Marrakesh and London and has two big international names for box office. This was James Stewart's third of four Hitchcock films and his only teaming with Doris Day and her only Hitchcock film.

I do wonder why Hitchcock never used Doris again. At first glance she would fit the profile of blond leading ladies that Hitchcock favored. Possibly because her wholesome screen image was at odds with the sophistication Hitchcock also wanted in his blondes.

Doris does some of her best acting ever in The Man Who Knew Too Much. Her best scene is when her doctor husband James Stewart gives her a sedative before telling her their son has been kidnapped by an English couple who befriended them in Morocco. Stewart and Day play off each other beautifully in that scene. But Doris especially as she registers about four different emotions at once.

Day and Stewart are on vacation with their son Christopher Olsen in Morocco and they make the acquaintance of Frenchman Daniel Gelin and the aforementioned English couple, Bernard Miles and Brenda DaBanzie. Gelin is stabbed in the back at a market place in Marrakesh and whispers some dying words to Stewart about an assassination to take place in Albert Hall in London. Their child is snatched in order to insure their silence.

For the only time I can think of a hit song came out of a Hitchcock film. Doris in fact plays a noted singer who retired from the stage to be wife and mother. The song was Que Sera Sera and I remember it well at the age of 9. You couldn't go anywhere without hearing it in 1956, it even competed with the fast rising Elvis Presley that year. Que Sera Sera won the Academy Award for Best Song beating out such titles as True Love from High Society and the title song from Around the World in 80 Days. It became Doris Day's theme song for the rest of her life and still is should she ever want to come back.

In fact the song is worked quite nicely into the plot as Doris sings it at an embassy party at the climax.

Instead of doing it with mirrors, Hitchcock shot the assassination scene at the real Albert Hall and like another reviewer said it's not directed, it's choreographed. You'll be hanging on your seats during that moment.

This was remake well worth doing.

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