Kirk Douglas

Character: Robert Caine

Agostina Belli

Character: Sara Golan

Simon Ward

Character: Angel Caine

Anthony Quayle

Character: Professor Griffith

Adolfo Celi

Character: Dr. Kerouac

Romolo Valli

Character: Charrier

Ivo Garrani

Character: Prime Minister

Spiros Focás

Character: Harbin

Massimo Foschi

Character: Young Arab

Virginia McKenna

Character: Eva Caine

John Carlin

Character: Robertson

Alexander Knox

Character: Meyer

Vittorio Fanfoni

Character: First Asylum Patient

Eugenio Masciari

Character: Second Asylum Patient

Sergio Serafini

Character: Third Asylum Patient

Domenico Di Costanzo

Character: Fourth Asylum Patient

Geoffrey Keen

Character: Gynecologist

Allan Hendrick

Character: Fanatical Demonstrator

Peter Cellier

Character: Sheckley

Gerard Hely

Character: Clarke

Caroline Langrishe

Character: Girlfriend (as Caroline Horner)

Penelope Horner

Character: Caine’s Secretary

Jenny Twigge

Character: Air Hostess

Richard Cornish

Character: 1st Journalist

Denis Lawson

Character: 2nd Journalist

John Bancroft

Character: 3rd Journalist

Joanne Dainton

Character: Nurse