Casts
Jack Watling
as Dennis Willows
Rona Anderson
as Sallie Harbord
John Horsley
as Peter Hastings
Russell Napier
as Inspector Simmons
Kenneth Kent
as Dr. Julian Cole
Alastair Hunter
as Sgt. Thorpe
Joan Hickson
as Miss Edinger
John Le Mesurier
as Phinneas Tilliard
June Ashley
as Madeline Tilliard
Peter Gilmore
as Bit Part (uncredited)
