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