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The Man Who Knew Too Much (1956)

PG  |   |  Thriller  |  1 June 1956 (USA)
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Ratings: 7.5/10 from 38,960 users  
Reviews: 191 user | 73 critic

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), 2 more credits »
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Title: The Man Who Knew Too Much (1956)

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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 ...
Hillary Brooke ...
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 »




PG | See all certifications »

Parents Guide:





| |

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?


Ambrose Chapel was filmed at St. Saviour's Church Hall in St. Saviour's Road, Brixton Hill, London. St. Saviour's was sold off by the Church of England in the 1970s and has since been torn down. See more »


In the market scene when Louis Bernard is murdered, his hands switch from dyed when he is stabbed, clean when staggering with the knife in his back, and back to dyed when he meets Dr. McKenna. See more »


Edward Drayton: Remember, you will only have time for just one shot. If you need another, the risk is yours.
Rien: I don't take risks.
See more »

Crazy Credits

Partly because the rights to this film were acquired from Paramount by Universal, the Paramount VistaVision fanfare is played over the opening Universal logo. This is the way it is currently (2005) shown on television in the re-release version (1984). See more »


Featured in The Making of 'Psycho' (1997) 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.

58 of 80 people found this review helpful.  Was this review helpful to you?

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