Peter Cushing as Dr. Christopher Maitland

Christopher Lee as Sir Matthew Phillips

Patrick Wymark as Anthony Marco

Jill Bennett as Jane Maitland

Peter Woodthorpe as Bert Travers, Marco's Landlord

Nigel Green as Inspector Wilson

April Olrich as French Girl

George Coulouris as Dr. Londe

Maurice Good as Pierre, Phrenologist

Patrick Magee as Police Surgeon

Frank Forsyth as Judge

Michael Gough as Auctioneer

Anna Palk as Maid

Paul Stockman as First Guard

Geoffrey Cheshire as Second Guard

George Hilsdon as Policeman

Jack Silk as Driver

Paul Beradi as Auction Attendee (uncredited)

Ernest Blyth as Auction Attendee (uncredited)

Eric Kent as Auction Attendant (uncredited)

Jack Armstrong as Auction Bidder (uncredited)

Arthur Goodman as Auction Bidder (uncredited)

Harold Sanderson as Auction Bidder (uncredited)