Prof. Sir Alexander Saxton
Dr. Wells
Captain Kazan
Father Pujardov
Countess Irina Petrovska
Inspector Mirov
Yevtushenko
Natasha
Miss Jones
Conductor Koniev
Count Maryan Petrovski
Luggage Worker
American Passenger, Miss Bennett (uncredited)
Creature
Vorkin
Russian Guard
Station Master
Grashinski - the Locksmith (uncredited)
First Telegraphist
Second Telegraphist (uncredited)
Capt. O'Hagan (uncredited)
(uncredited)