Christopher Lee
(Prof. Sir Alexander Saxton) ,
Peter Cushing
(Dr. Wells) ,
Telly Savalas
(Captain Kazan) ,
José Jaspe
(Conductor Koniev) ,
Barta Barri
(First Telegraphist) ,
José Canalejas
(Russian Guard) ,
Faith Clift
(American Passenger, Miss Bennett (uncredited)) ,
Alberto de Mendoza
(Father Pujardov) ,
Víctor Israel
(Luggage Worker) ,
Helga Liné
(Natasha) ,
Juan Olaguibel
(Creature) ,
Julio Peña
(Inspector Mirov) ,
Ángel del Pozo
(Yevtushenko) ,
Alice Reinheart
(Miss Jones) ,
George Rigaud
(Count Maryan Petrovski) ,
Vicente Roca
(Station Master) ,
Silvia Tortosa
(Countess Irina Petrovska) ,
José Marco
(Vorkin) ,
Hiroshi Kitatawa
(Grashinski - the Locksmith (uncredited)) , Peter Beckman (Second Telegraphist (uncredited))