Bernard Lee
— Superintendent Meredith
Jack Watling
— Jack Heath
Finlay Currie
— Alex Campbell
Suzanne Lloyd
— Diane Heath
Richard Gale
— Maddox
James Bree
— Reynolds
Dora Reisser
— Anne Wilding
Ivor Salter
— Mr. White
Christa Bergmann
— Gretta
Billy Milton
— Chandler
Lawrence Davidson
— Warburton
Dallas Cavell
— Porter
Daphne Goddard
— Mrs. Lever
Michael Stainton
— Sergeant Landis