• 
  James Stewart

  John Royer
• 
  Spencer Tracy

  Carnaghan
• 
  Carli Elinor

  Ospatar
• 
  Joseph Crehan

  Businessman with Pipe
• 
  Tom Helmore

  Matisson
• 
  Don Haggerty

  Submarine Commander
• 
  DeForest Kelley

  Lt. Glenson
• 
  Jack Shea

  Intern

• 
  Frank Wilcox

  Naval Officer with Businessmen
• 
  Lester Matthews

  Matisson
• 
  Valentina Cortese

  Luana
• 
  James Todd

  Carson
• 
  Russell Hicks

  Businessman with Cigar
• 
  Joel Allen

  Federal Agent
• 
  Lionel Barrymore

  John Manchester

• 
  Richard Loo

  Col. Tomura
• 
  John Hodiak

  Kellar
• 
  Sydney Greenstreet

  The Dutchman