An aristocratic widow discovers that her former lover, a medical officer in the British army, is secretly a German spy.
Mara Russell-Tavernan
as Lady Irma Enderby
Ivan Craig
as Maj. Seton
Valentine Dyall
as Intelligence Director
Derek Aylward
as Victor
Julian Sherrier
as Tony
Lee Fox
as Maj. Malcolm
Hamilton Keene
as Col. Lorimer
Eddie Leslie
as Capt. Blynne
Desmond Llewelyn
as Policeman
