Frank Shannon

as Dr. Zarkov

as Dr. Hans Zarkov (archive footage)

as Dr. Zarkov

as Dr. Alexis Zarkov

as Train Station Gateman (Uncredited)

as Dr. Hayden

as Professor Davidson

as Senator (uncredited)

as Police Commissioner

as Hammond

as McDowell

as Sheriff

as Second Man with California Gold News

as Dr. Zarkov

as Mr. O'Malley - Captain of the Nova Scotian (uncredited)

as Construction Supervisor at Elevator

as Sweeney

as Kelsey (Uncredited)

as Old Man (uncredited)

as Police Capt. McTavish

as Frank, the Bartender (uncredited)

as Inspector McTavish

as Captain McTavish

as Mac (uncredited)

as Dr. Alexis Zarkov

as Police Captain McTavish (uncredited)

as Capt. McTavish

as Police Sergeant at Jail (Uncredited)

as Dr. Hans Zarkov

as Duke Slattery - Policeman with Warrant

as Dr. Zarkov

as Police Lieutenant (uncredited)

as Captain McTavish

as Minor Role (uncredited)

as Desk Sergeant (uncredited)

as Captain McTavish

as Detective Hewitt (uncredited)

as Chaplain (uncredited)

as Mr. Holt

as Sheriff Anderson

as Dr. Hans Zarkov

as Dan O'Reilly

as Captain Stafford

as Police Sergeant

as Police Chief at Lodge (uncredited)

as Agent Joe

as Mr. Farley

as Mike

as Prison Warden

as The Burglar, Holtz aka Jack Dunning

as Judge Bradford

as Badger

as Sir John Mansfield

as Terrence O'Malley

as Phil Rourke

as Detchard