Dr. Christopher Maitland

Peter Cushing

Marco

Patrick Wymark

Sir Matthew Phillips

Christopher Lee

Jane Maitland

Jill Bennett

Inspector Wilson

Nigel Green

Auctioneer

Michael Gough

Bert Travers, Marco's Landlord

Peter Woodthorpe

Dr. Londe

George Coulouris

French Girl

April Olrich

Police Surgeon

Patrick Magee

Pierre, Phrenologist

Maurice Good

Judge

Frank Forsyth

Maid

Anna Palk

First Guard

Paul Stockman

Guard

Geoffrey Cheshire

Policeman

George Hilsdon

Driver

Jack Silk

Auction Attendee (uncredited)

Lewis Alexander

Auction Attendee (uncredited)

Paul Beradi

Auction Attendee (uncredited)

Ernest Blyth

Auction Attendant (uncredited)

Eric Kent

Auction Bidder (uncredited)

Jack Armstrong

Auction Attendee (uncredited)

Aileen Lewis

Auction Bidder (uncredited)

Arthur Goodman

Auction Bidder (uncredited)

Harold Sanderson

Auction Bidder (uncredited)

Joe Beckett