Keith Andes
— David Martens
Hazel Court
— Sally Meadows
Jean Aubrey
— Annabelle Meadows
Michael Gough
— Kingsley Beauchamp
Julia Arnall
— Diane Leigh
Edwin Richfield
— Costard
Patricia Jessel
— Madeleine Dupont
Peter Hammond
— George
Alfred Burke
— Podd
Barbara Archer
— Betty Costard
Richard Pearson
— Bullock
George Benson
— Freddie
Diane Bester
— Tessa
Howard Marion-Crawford
— Inspector Duncan
Neil Hallett
— Sergeant Anderson
Annabel Maule
— Hospital Sister
Charles Lamb
— Lock-Keeper