British double agent Madeleine Goddard meets and falls in love with German spy Baron Karl Von Marwitz during World War I.

Vivien Leighas Madeleine Goddard
Conrad Veidtas Baron Karl Von Marwitz
Joan Gardneras Lupita
Anthony Bushellas Bob Carter
Ursula Jeansas Gertrude
Eliot Makehamas Anatole Bergen
Austin Trevoras Dr. Muller
Edmund Willardas General Berlin of German Intelligence
Georges Périnal