• 
  George Sanders

  Clementi Sabourin
• 
  George Brent

  O'Connell (party guest)
• 
  Charles Sherlock

  Limousine Driver
• 
  Coleen Gray

  Mrs. Edith Van Renasslear
• 
  Yvonne De Carlo

  Bridget Kelly
• 
  Forbes Murray

  Tourist on Ship Deck
• 
  Morris Ankrum

  Capt. LaFarge (Homicide Squad)
• 
  Celia Lovsky

  Mrs. Sabourin (Clementi's mother)

• 
  John Hoyt

  Mr. O'Hara
• 
  Bert Stevens

  Passenger Departing Plane
• 
  Baynes Barron

  Detectiv
• 
  Nancy Gates

  Stephanie North
• 
  Lisa Ferraday

  Zina Monte
• 
  Tom Greenway

  Stock Market Watcher in Montage
• 
  Zsa Zsa Gabor

  Mrs. Ryan

• 
  Marjorie Bennett

  Angry Woman
• 
  Kenner G. Kemp

  Backstage Well-Wisher
• 
  Victor Jory

  Leonard Wilson
• 
  John Sutton

  The Actor as 'Tom' in Stage Play
• 
  Tom Conway

  Gerry Monte aka Sabourin
• 
  Curtis Cooksey

  Oswald Van Renassalear
• 
  Gabriel Curtiz

  Max Freundlich
• 
  Werner Klemperer

  Herbert Bauman - Clementi's lawyer
• 
  Justice Watson

  Henry - Clementi's Butler

• 
  Rudi Feld

  art director
• 
  James Wong Howe

  imagine
• 
  Max Steiner

  departament sunet
• 
  Conrad A. Nervig

  editorial department
• 
  Ross Dowd

  set decorator