Judith Anderson
— Elizabeth Devlin
Elizabeth Ashley
— Sally Devlin
David McCallum
— Kenneth Canfield
Mary Adams
— The Maid
Barry Cahill
— The Sergeant
Alan Caillou
— The Police Inspector
Helmut Dantine
— Hans Raedler
Gregory Gaye
— The Soviet Ambassador
Larry Gelbman
— The Manservant
Lew Horn
— The Intruder
Peter Marland-Jones
— Tichborne
Donald Moffat
— John Heywood
Priscilla Morrill
— Tatiana Kogan
Laurence Naismith
— Lord Pomeroy
Charles H. Radilak
— Lancome