Mark Peters
Joan Marplay
Lord Noel Stratton
Allistair McNab
Amos Craven
Flinters
Lucus Marplay
Sinclair Ellis
Nigel Partridge
Sir John Digby
Dade
Inspector Wren
Miss Carson (uncredited)
Bradley the Butler (uncredited)
Copy Boy (uncredited)
Kirby the Assistant Editor (uncredited)
Leets (uncredited)
Laura the Secretary (uncredited)
Eddie the Sanitorium Attendant (uncredited)
Printer (uncredited)
Wilkes the Editor (uncredited)