World War I. Lili Smith is a beloved British music hall singer, often providing inspiration for the British and French troops and general populace singing rallying patriotic songs. She is also half German and is an undercover German spy, using her feminine wiles to gather information from the high ranking and generally older military officers and diplomats she seduces.
Julie Andrews
as Lili Smith
Rock Hudson
as Major William Larrabee
Jeremy Kemp
as Colonel Kurt Von Ruger
Lance Percival
as T.C. Carstairs
Michael Witney
as Lt. George Youngblood Carson
Gloria Paul
as Crepe Suzette
Jacques Marin
as Major Duvalle
André Maranne
as Lt. Liggett
Bernard Kay
as Bedford
Doreen Keogh
as Emma
Carl Duering
as General Kessler
Laurie Main
as French General
