Peter Reynolds
Stephen
Rona Anderson
Claire
Patrick Barr
Robert
Lana Morris
Marion
Michael Balfour
Joe
John Forrest
Wally
Viola Lyel
Mrs. Barclay
John Le Mesurier
Inspector
Martin Benson
Bruno
Stephen Boyd
Policeman (uncredited)
Genine Graham
Stella
Martin Walker
Prof. Barclay