• 
  Alfred Hitchcock

  regizor

• 
  Campbell Dixon

  scenarist

• 
  John Gielgud

  Edgar Brodie / Richard Ashenden
• 
  Robert Young

  Robert Marvin
• 
  Madeleine Carroll

  Elsa Carrington
• 
  Percy Marmont

  Caypor
• 
  Tom Helmore

  Colonel Anderson
• 
  Michael Rennie (I)

  Unconfirmed Role

• 
  Charles Carson

  'R'
• 
  Michael Redgrave

  Army captain
• 
  Andreas Malandrinos

  manager
• 
  Nobert Young

  Robert Marvin
• 
  Peter Lorre

  The General
• 
  René Ray

  Maid
• 
  Lilli Palmer

  Lilli

• 
  Howard Marion-Crawford

  Karl (Lillis' Fiancee)
• 
  Sebastian Cabot

  Unconfirmed Role
• 
  Miles Malleson

  rol minor