The Steel Key

Terence Morgan

Johnny O'Flynn

Joan Rice

Doreen Wilson

Raymond Lovell

Inspector Forsythe

Dianne Foster

Sylvia Newman

Colin Tapley

Dr. Crabtree

Esmond Knight

Prof. Newman

Mark Baker

Dr. Metcalfe

Cyril Conway

Sgt. Cove

Hector Ross

Beroni

Arthur Lovegrove

Gilchrist

Esma Cannon

Patient in Doctor's Waiting Room

Sam Kydd

Chauffeur