The Man Who Knew Too Much

While vacationing in St. Moritz, a British couple receive a clue to an imminent assassination attempt, only to learn that their daughter has been kidnapped to keep them quiet.

• 
  Alfred Hitchcock
• 
  Pen Tennyson

• 
  Leslie Banks
  Bob Lawrence
• 
  Edna Best
  Jill Lawrence
• 
  Peter Lorre
  Abbott
• 
  Frank Vosper
  Ramon Levine
• 
  Hugh Wakefield
  Clive
• 
  Nova Pilbeam
  Betty Lawrence
• 
  Pierre Fresnay
  Louis Bernard
• 
  Cicely Oates
  Nurse Agnes
• 
  D.A. Clarke-Smith
  Binstead
• 
  George Curzon
  Gibson
• 
  Frank Atkinson
  Policeman Shot Behind Mattress (uncredited)
• 
  Betty Baskcomb
  Lawrence's Maid (uncredited)
• 
  Cot D'Ordan
  Concierge (uncredited)
• 
  Tony De Lungo
  Hotel Manager (uncredited)
• 
  Clare Greet
  Mrs. Brockett (uncredited)
• 
  Pat Hagan
  Policeman at Siege (uncredited)
• 
  Joan Harrison
  Secretary (uncredited)
• 
  Edward A. Hill-Mitchelson
  Minor Role (uncredited)
• 
  Alfred Hitchcock
  Man in Raincoat Passing Bus (uncredited)
• 
  James Knight
  Police Inspector (uncredited)