The Man Who Knew Too Much: Dr. Ben McKenna, his wife Jo and their son Hank are on a touring holiday of Africa when they meet the mysterious Louis Bernard on a bus. The next day Bernard is murdered in the local marketplace, but before he dies he manages to reveal details of an assassination about to take place in London. Fearing that their plot will be revealed, the assassins kidnap Hank in order to keep the McKenna's silent. Ben and Jo go to London and take matters into their own hands.
Director : Alfred Hitchcock
Cast : Alan Mowbray, Alex Frazer, Alexis Bobrinskoy, Alfred Hitchcock, Alix Talton, Alma Taylor, Anthony Warde, Arthur Ridley, Barbara Burke, Barry Keegan, Bernard Herrmann, Bernard Miles, Bess Flowers, Betty Bascomb, Brenda De Banzie, Carolyn Jones, Christopher Olsen, Clifford Buckton, Daniel Gelin, Donald Lawton, Doris Day, Edward Manouk, Enid Lindsey, Eric Snowden, Frank Albertson, Frank Atkinson, George Howe, Gladys Holland, Guy Verney, Harold Kasket, Harry Fine, Hillary Brooke, James Stewart, Janet Bruce, John Barrard, John Marshall, John O'Malley, Leo Gordon, Lewis Martin, Lloyd Lamble, Lou Krugman, Louis Mercier, Milton Frome, Mogens Wieth, Noel Willman, Patrick Aherne, Patrick Whyte, Peter Camlin, Peter Williams, Ralph Neff, Ralph Truman, Reggie Nalder, Richard Marner, Richard Wattis, Richard Wordsworth, Walter Gotell, Wolf Frees, Yves Brainville