• 
  Eli Wallach

  Stratos
• 
  Irene Papas

  Sophia
• 
  George Pastell

  Police Lieutenant
• 
  Terry Gilkyson

  Singer
• 
  Peter McEnery

  Mark Camford
• 
  Joan Greenwood

  Aunt Frances Ferris
• 
  Hayley Mills

  Nikky Ferris
• 
  John Le Mesurier

  Anthony Gamble

• 
  Sheila Hancock

  Cynthia Gamble
• 
  Pamela Barrie

  Ariadne
• 
  Michael Davis

  Alexis
• 
  Tutte Lemkow

  Orestes
• 
  André Morell

  Yacht Captain (as Andre Morell)
• 
  Steve Plytas

  Hearse Driver
• 
  Paul Stassino

  Lambis

• 
  Harry Tardios

  Bus Driver

• 
  Anthony Masters

  art director
• 
  Michael Reed

  camera and electrical departme
• 
  John Wilcox

  camera and electrical departme
• 
  Ron Grainer

  departament sunet
• 
  Anthony Mendleson

  costume
• 
  William Alwyn

  music department
• 
  Ron Grainer

  music department
• 
  Terry Gilkyson

  music department
• 
  Paul J. Smith

  music department
• 
  Walt Disney

  producător
• 
  John Peverall

  second unit director or assist
• 
  Costas Ferris

  second unit director or assist
• 
  Terry Gilkyson

  Soundtrack
• 
  Jonathan Bates (I)

  sound department