Diamonds for Breakfast

Swinging playboy Grand Duke Nicholas Goduno, a direct descendent of the Romanov family who were overthrown in the Russian Revolution of 1917, learns that his family's crown jewels will be exhibited at a London museum and plots to steal them. To this end, he gathers a crew of beautiful but dangerous women, led by Bridget Rafferty, to assist in his plot against Popov, the Soviet functionary in charge of the exhibit.

• 
  Christopher Morahan

• 
  Marcello Mastroianni
  Grand Duke Nicholas Wladimirovitch Goduno
• 
  Rita Tushingham
  Bridget Rafferty
• 
  Elaine Taylor
  Victoria
• 
  Margaret Blye
  Honey
• 
  Warren Mitchell
  Popov
• 
  Leonard Rossiter
  Inspector Dudley
• 
  Bill Fraser
  Bookseller
• 
  Bryan Pringle
  Police Sergeant
• 
  Francesca Tu
  Jeanne Silkingers
• 
  David Horne
  Duke of Windemere
• 
  Charles Lloyd Pack
  Butler
• 
  Anne Blake
  Nashka
• 
  David Webb
• 
  Juba Kennerley
  Casino Patron (uncredited)
• 
  Ian Trigger
  Popov's assistant (uncredited)
• 
  Norman Mitchell
  (uncredited)
• 
  Nora Nicholson
  Anastasia Petrovna
• 
  Rosalind Knight
  Museum Visitor in Pink Dress (uncredited)