When a woman begins to investigate her husband's mysterious death in a plane accident she discovers the involvement of a woman known simply as Diana.
Vincent Ball
as Bill Vernon
Betty McDowall
as Joan Scott
Geoffrey Toone
as Colonel Justin
Clare Owen
as Pam Jennings
Marianne Stone
as Miss Green
Raymond Adamson
as George
Peter Illing
as Kovali
Richard Caldicot
as Fisher
Basil Beale
as Harris
Dermot Walsh
as Phil Scott
Michael Balfour
as Newsagent
Tom Gill
as Photographer
