Alan Arkin as Dr. Sigmund Freud

Vanessa Redgrave as Lola Deveraux

Robert Duvall as Dr. John H. Watson

Nicol Williamson as Sherlock Holmes

Laurence Olivier as Professor James Moriarty

Joel Grey as Lowenstein

Samantha Eggar as Mary Morstan Watson

Jeremy Kemp as Baron Karl von Leinsdorf

Charles Gray as Mycroft Holmes

Régine as Madame

Anna Quayle as Freda

Georgia Brown as Mrs. Freud

Jill Townsend as Mrs. Holmes

John Bird as Berger

Alison Leggatt as Mrs. Hudson

Frederick Jaeger as Marker

Erik Chitty as The Butler

Jack May as Dr. Schultz

Gertan Klauber as The Pasha

Leon Greene as Squire Holmes

Sheila Shand Gibbs as Nun

Erich Padalewski as Station Master