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Peter Cushing
Harry Fordyce

André Morell
Colonel Gore Hepburn (as Andre Morell)

Richard Vernon
Pearson

Norman Bird
Arthur Sanderson

Kevin Stoney
Detective Inspector Mason

Barry Lowe
Peter Harvill

Edith Sharpe
Miss Pringle

Lois Daine
Sally

Alan Haywood
Kane

Jimmy Cains
Sidewalk Santa Claus (uncredited)

Vera Cook
Mary Fordyce (voice) (uncredited)

Charles Morgan
Det. Sgt. Collins (uncredited)

Paddy Smith
Bank Customer (uncredited)

Fred Stone
Window Cleaner (uncredited)

Gareth Tandy
Tommy Fordyce (voice) (uncredited)

Graham Tonbridge
Bank Customer (uncredited)