All Cast
Yul Brynner
Victor Fabian
Kay Kendall
Dolly Fabian
Geoffrey Toone
Dr. Richard Hilliard
Maxwell Shaw
Jascha Gendel / Grisha Gendel
Mervyn Johns
Mr. Alonzo Wilbur Jr.
Martin Benson
Luigi Bardini
Harry Lockart
Chester
Gregory Ratoff
Maxwell Archer
Shirley Anne Field
Angela Hooper
Colin Drake
Doctor (uncredited)
Andrew Faulds
Interviewer (uncredited)
Barbara Hall
Secretary (uncredited)