• 
  Charles Crichton

  regizor

• 
  Monja Danischewsky

  scenarist

• 
  Peter Sellers

  Dl. Martin
• 
  Robert Morley

  Robert Macpherson
• 
  Constance Cummings

  Angela Barrows
• 
  Fred Griffiths

  1st Porter
• 
  Donald Bisset

  Tobacconist
• 
  Michael Goodliffe

  Detectiv

• 
  Ernest Thesiger

  Old Macpherson
• 
  Moultrie Kelsall

  Graham
• 
  Sam Wanamaker

  Commentary spoken by
• 
  Noel Howlett

  Mr. White
• 
  Patricia Hayes

  Jeannie Macdougall
• 
  William Mervyn

  Detective's friend
• 
  MacDonald Parke

  'C.J.'

• 
  Robert Crewdson

  Poliţist