Maurice Denham

Dr. Lunn

John Robinson

Lloyd Crichton

Robert Ayres

Boardman

Leslie Sands

Superintendent Travers

Jan Conrad

Igor Petrov

John Barron

Henry Walpole

Robert James

James Cartright

Jennifer Wright

Mary Harkness

Paddy Webster

Helen Dawson

Carmel McSharry

Bella

Jimmy Sangster

Writer

Wilfred Eades

Director

Sydney Newman

Producer

Voytek

Production Design