• 
  George Marshall

  regizor

• 
  John Gay

  scenarist

• 
  Rita Hayworth

  Eve Lewis
• 
  Rex Harrison

  Jimmy Bourne
• 
  Joseph Wiseman

  Jean Marie Calbert
• 
  Peter Illing

  Mr. Pickett the Art Expert
• 
  Alida Valli

  Duchess Blanca
• 
  Grégoire Aslan

  Dr. Victor Muñoz

• 
  George Rigaud

  Spanish Police Inspector
• 
  Barta Barri

  Chern, Lawyer/Fence
• 
  Carey Harrison

  Jimmy Bourne
• 
  Gérard Tichy

  Antonio, Prado Museum Guard