Stanley Baker

Detective Sergeant Jack Truman

Anne Heywood

Cathie Murphy

David McCallum

Johnnie Murphy

Peter Cushing

Father Laidlaw

John Slater

Sgt. Walker

Clifford Evans

Headmaster Evans

Moultrie Kelsall

Superintendent

George A. Cooper

Chief Inspector

Michael Chow

Alexander

Tsai Chin

Primrose

Sean Lynch

Slick

Freddie Starr

Tommy

Sheila Raynor

Mrs. Catlin

Grace Arnold

Customer in Grocer's Shop (uncredited)

Jeremy Bulloch

Pageboy at Hotel (uncredited)

Melvyn Hayes

Kid in Johnnie's Gang (uncredited)

Stratford Johns

Police Constable (uncredited)

Robert Raglan

Doorman at Grand Hotel (uncredited)

Philip Ray

Stallholder (uncredited)

Lynne Roberts

Maureen Owen

Cyril Shaps

Hairdresser (uncredited)