Maxwell Archer

John Loder

Sarah

Leueen MacGrath

Supt. Gordon

Athole Stewart

Nina

Marta Labarr

Insp. Cornell

George Merritt

Nicolides

Ronald Adam

George Gull Jr.

Peter Hobbes

George Gull Sr.

Ralph Roberts

Perkins

Syd Crossley

Miss Duke

Barbara Everest

Director

John Paddy Carstairs

Writer

Katherine Strueby

Novel

Hugh Clevely

Producer

William Sistrom

Director of Photography

Claude Friese-Greene

Editor

Alan Jaggs

Art Direction

Ian White

Music Director

W.L. Trytel