Cast

• 

  

  John Bentley

  Superintendent Wills

• 

  

  Patrick Allen

  Dr. Nelson Pollard

• 

  

  Jacqueline Ellis

  Elsa Marlowe

• 

  

  Wilfrid Brambell

  Lock-Keeper

• 

  

  John Glyn-Jones

  Dr. Maurice Tarn

• 

  

  Jane Murdoch

  Honeymoon Wife

• 

  

  Brian McDermott

  Det. Sgt. Stillman

• 

  

  Gerald Andersen

  Major Paul Amery

• 

  

  Edward Atienza

  Clerk

• 

  

  Ric Young

  Johnny Choto

• 

  

  Robert Lee

  Mr. Nam Lee

• 

  

  Yvonne Buckingham

  Miss Russell

• 

  

  William Gaunt

  Mitch Hallam

• 

  

  Michael Deacon

  Angus

• 

  

  Arnold Lee

  Soyoki

• 

  

  John Horsley

  Pathologist

• 

  

  Lesley Nunnerley

  Vera Martin

• 

  

  Malcolm Russell

  Joe Martin

• 

  

  Yvonne Shima

  Tamaya

• 

  

  Keith Faulkner

  Lock-keeper's Assistant

• 

  

  Myo Toon

  1st Chinese Man

• 

  

  Sano Wong

  2nd Chinese Man

• 

  

  Burt Kwouk

  Captain Feng

• 

  

  Timothy Parkes

  Honeymoon Husband

• 

  

  Howard Pays

  Police Sgt.

• 

  

  Peter Hager

  Warden

• 

  

  Don McKillop

  Reporter

• 

  

  Robert Russell

  Uniformed Sgt.

• 

  

  Steve Reagan

  Police Constable

• 

  

  Ping Ping Sam

  Instructor in Gym