The Man Who Knew Too Much ()

Reference View | Change View

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

  • Won 1 Oscar. Another 1 win & 4 nominations.
  • See more »

Photos and Videos

Cast verified as complete

Dr. Benjamin McKenna
Josephine Conway McKenna
Brenda de Banzie ...
Lucy Drayton
Edward Drayton
Ralph Truman ...
Inspector Buchanan, Special Branch
Louis Bernard
Mogens Wieth ...
Val Parnell
Jan Peterson
Hank McKenna
French Marksman
Albert Hall Assistant Manager
Noel Willman ...
Woburn, Special Branch
Helen Parnell
Yves Brainville ...
French Police Inspector
Cindy Fontaine
London Symphony Orchestra ...
Covent Garden Chorus ...
Barbara Howitt ...
Herself - Soloist
Rest of cast listed alphabetically:
Patrick Aherne ...
Handyman (uncredited)
Taxidermist (uncredited)
Frank Atkinson ...
Edgar, a Taxidermist (uncredited)
Walter Bacon ...
Church Member (uncredited)
Royal Albert Hall Attendee (uncredited)
Taxidermist Holding the Panther (uncredited)
Betty Baskcomb ...
Edna, the Church Organist (uncredited)
Hyma Beckley ...
Albert Hall Audience (uncredited)
Paul Beradi ...
Embassy Guest (uncredited)
Eumenio Blanco ...
Arab (uncredited)
Alexis Bobrinskoy ...
Foreign Prime Minister (uncredited)
Church Member (uncredited)
Janet Bruce ...
Woman in Box Office Queue (uncredited)
Naida Buckingham ...
Albert Hall Audience (uncredited)
Clifford Buckton ...
Sir Kenneth Clarke (uncredited)
Barbara Burke ...
Miss Benson, the Marksman's Escort (uncredited)
Nora Bush ...
Church Member (uncredited)
Peter Camlin ...
Marrakesh Waiter (uncredited)
French Policeman (uncredited)
Jimmy Charters ...
Albert Hall Audience (uncredited)
Abdelhaq Chraibi ...
Muslim Husband on the Bus (uncredited)
Oliver Cross ...
Royal Albert Hall Attendee (uncredited)
Pauline Farr ...
Ambassador's Wife (uncredited)
Harry Fine ...
Edington, CID Inspector (uncredited)
Alex Frazer ...
Man in Box Office Lobby (uncredited)
Aide to Prime Minister (uncredited)
Embassy Back Entrance Guard (uncredited)
Drayton's Chauffeur (uncredited)
Matthews , Scotland Yard Patrol Car (uncredited)
Victor Harrington ...
Embassy Guest (uncredited)
Sam Harris ...
Royal Albert Hall Attendee (uncredited)
George Hilsdon ...
Photographer at the Airport (uncredited)
Man in Marrakesh Marketplace (uncredited)
Gladys Holland ...
Bernard's Date at Restaurant (uncredited)
Royal Albert Hall Attendee (uncredited)
George Howe ...
Ambrose Chappell Sr. (uncredited)
Arab (uncredited)
Harold Kasket ...
Stavis, Embassy Butler (uncredited)
Barry Keegan ...
Patterson, Scotland Yard Car Patrol Officer (uncredited)
Lou Krugman ...
Marrakesh Headwaiter (uncredited)
Ann Kunde ...
Church Member (uncredited)
General Manager of Albert Hall (uncredited)
Donald Lawton ...
Desk Clerk (uncredited)
Royal Albert Hall Attendee (uncredited)
Enid Lindsey ...
Lady Clarke (uncredited)
Mayne Lynton ...
Grey Haired Taxidermist (uncredited)
Janet Macfarlane ...
Albert Hall Audience (uncredited)
Edward Manouk ...
Marrakesh Waiter (uncredited)
Aide to Prime Minister (uncredited)
John Marshall ...
Embassy Butler (uncredited)
Lewis Martin ...
Scotland Yard Detective in Patrol Car (uncredited)
Louis Mercier ...
French Policeman at Market Place #1 (uncredited)
Lee Miller ...
Royal Albert Hall Attendee (uncredited)
Ralph Neff ...
Drayton's Henchman (uncredited)
Leslie Newport ...
Inspector at Albert Hall (uncredited)
John O'Malley ...
Hotel Doorman (uncredited)
Elsa Palmer ...
Embassy Cook (uncredited)
Liddell Peddieson ...
Taxidermist with a Cap (uncredited)
Church Member (uncredited)
Arthur Ridley ...
Albert Hall Ticket Collector (uncredited)
Lucile Sewall ...
Church Member (uncredited)
Mahin S. Shahrivar ...
Muslim Wife on the Bus (uncredited)
Eric Snowden ...
Special Branch Officer (uncredited)
Albert Hall Audience (uncredited)
Embassy Guest (uncredited)
Arthur Tovey ...
Royal Albert Hall Attendee (uncredited)
Guy Verney ...
Embassy Footman (uncredited)
French Policeman at Market Place #2 (uncredited)
Special Branch Officer (uncredited)
Peter Williams ...
Police Sergeant at Albert Hall (uncredited)
Richard Wordsworth ...
Ambrose Chappell Jr. (uncredited)
Allen Zeidman ...
Albert Hall Audience (uncredited)

Directed by

Alfred Hitchcock

Written by

John Michael Hayes ... (screenplay)
Charles Bennett ... (based on a story by) and
D.B. Wyndham-Lewis ... (based on a story by)
Angus MacPhail ... (contributing writer) (uncredited)

Produced by

Herbert Coleman ... associate producer
Alfred Hitchcock ... producer (uncredited)

Music by

Bernard Herrmann ... (music scored by)

Cinematography by

Robert Burks ... director of photography

Film Editing by

George Tomasini

Editorial Department

Sam Vitale ... assistant editor (uncredited)

Casting By

William Cowitt ... (uncredited)
Gary Fifield ... (uncredited)
Bill Greenwald ... (uncredited)
Edward R. Morse ... (uncredited)
Tony Regan ... (uncredited)

Art Direction by

Henry Bumstead
Hal Pereira

Set Decoration by

Sam Comer
Arthur Krams

Costume Design by

Edith Head ... (costumes)

Makeup Department

Wally Westmore ... makeup supervisor
Virginia Darcy ... hairdresser (uncredited)
Dan Greenway ... makeup artist (uncredited)

Production Management

Hugh Brown ... assistant production manager (uncredited)
Frank Caffey ... production manager (uncredited)
C.O. Erickson ... unit production manager (uncredited)
C.R. Foster-Kemp ... unit manager: London (uncredited)

Second Unit Director or Assistant Director

Howard Joslin ... assistant director
Ralph Axness ... second assistant director (uncredited)
Herbert Coleman ... second unit director (uncredited)
Ned Dobson ... second assistant director (uncredited)
Basil Keys ... second assistant director: London (uncredited)

Art Department

Walter Broadfoot ... props (uncredited)
Dorothea Holt ... illustrator (uncredited)
Richard Rabis ... stand-by laborer (uncredited)
Neil Wheeler ... props (uncredited)

Sound Department

Paul Franz ... sound recordist
Gene Garvin ... sound recordist
Frank Carroll ... mike grip (uncredited)
Henry Keener ... recordist (uncredited)
William Pillar ... stage engineer (uncredited)
Bill Wistrom ... sound editor (uncredited)

Visual Effects by

Farciot Edouart ... process photography
John P. Fulton ... special photographic effects
Andrew Bonello ... digital restoration developer (uncredited)
Sophia Lo ... digital restoration: Cinesite (uncredited)
Monty Phillips ... digital artist (uncredited) (digital restoration)
Jerry Pooler ... digital restoration supervisor (uncredited)
Brad Reinke ... digital restoration producer (uncredited)
Antonio Torres ... digital artist: digital restoration and color correction, Cinesite (uncredited)


Ted Mapes ... stunts (uncredited)

Camera and Electrical Department

Neil Binney ... assistant camera (uncredited)
Adolph Froelich ... electrician (uncredited)
Bobby Greene ... assistant camera (uncredited)
Vic Jones ... gaffer (uncredited)
Ken Lobben ... still photographer (uncredited)
Don Ring ... gaffer: London (uncredited)
Leonard J. South ... second camera (uncredited)
Darrell Turnmire ... company grip (uncredited)
Paul Uhl ... assistant camera (uncredited)

Casting Department

Tish Morgan ... casting secretary (uncredited)

Costume and Wardrobe Department

Phyllis Dalton ... costumes (uncredited)
Lee Forman ... wardrobe: ladies (uncredited)
Joan Joseff ... costume jeweller (uncredited)
Leonard Mann ... wardrobe: men (uncredited)

Music Department

John C. Hammell ... music editor (uncredited)
London Symphony Orchestra ... music performed by (uncredited)

Other crew

Abdelhaq Chraibi ... technical advisor
Richard Mueller ... Technicolor color consultant
Constance Willis ... technical advisor
Catherine Barton ... welfare worker (uncredited)
Charles Morton ... script clerk (uncredited)
Art Sarno ... publicist (uncredited)
Crew verified as complete

Production Companies




Special Effects


Other Companies



Plot Summary

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 told to him by Bernard. With what little information they have on hand, Ben and Jo head to London to try and thwart the assassination attempt and more importantly find an alive and safe Hank. Scotland Yard is aware of some pieces to the puzzle, including the fact that Bernard was a French secret service agent and that there will be an assassination attempt on someone. They and the McKennas will have to work together as they hit a diplomatic roadblock, one that may be overcome with a special Jo Conway song. Written by Huggo

Plot Keywords
Taglines A little knowledge can be a deadly thing! See more »
Parents Guide View content advisory »

Additional Details

Also Known As
  • Alfred Hitchcock's The Man Who Knew Too Much (United States)
  • Into Thin Air (United States)
  • Alfred Hitchcock's The Man Who Knew Too Much (United Kingdom)
  • L'homme qui en savait trop (France)
  • Der Mann, der zuviel wußte (Germany)
  • See more »
  • 120 min
Aspect Ratio
Sound Mix
Filming Locations

Box Office

Budget $2,500,000 (estimated)

Did You Know?

Trivia Throughout the filming, Doris Day became increasingly concerned that Alfred Hitchcock paid more attention to camera setups, lighting and technical matters than he did to her performance. Convinced that he was displeased with her work, she finally confronted him. His reply was, "My dear Miss Day, if you weren't giving me what I wanted, *then* I would have to direct you!" See more »
Goofs Ben climbs up the bell rope and out the top of the bell tower to escape the chapel. A bell in such a small tower could not possibly be heavy enough to counterbalance Ben's body weight. Therefore, Ben would pull the bell to its limit whilst climbing, and the bell would not ring repeatedly as he climbs the rope. When Ben pulls the rope taut so that he can rappel down the roof, the bell rings twice more. See more »
Movie Connections Edited into Le contrôle de l'univers (1999). See more »
Soundtracks Storm Cloud Cantata See more »
Crazy Credits Opening credits prologue: A single crash of Cymbals and how it rocked the lives of an American family. See more »
Quotes [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 »

Contribute to This Page