The (O)ffice of (S)trategic (S)ervices' Cmdr. Brady (Patric Knowles) forms Operation "Applejack" (based on a composite of actual incidents during WWII) and sends Lt. (j.g.) Philip Masson, U.S.N.R. aka John Martin as spy Philippe Martine (Alan Ladd) along with Miss Ellen Rogers posing as her college roommate, Madame Elaine Duprez (Geraldine Fitzgerald) and Robert Bouchet, Tech Sgt., A.U.S. as Albert Bernardito (Richard Benedict) to acquire secret Nazi plans. After nearly getting caught they succeed and get new identities. However they discover a secret that could change the war and risk their lives to get the information back to London before it jeopardizes their lives.
as John Martin / Lt. (j.g.) Philip Masson, U.S.N.R. / Philippe Martine
as Miss Ellen Rogers / Madame Elaine Duprez
as Cmdr. Brady
as Col. Paul Meister
as (W)omen's (A)rmy (C)orps Radio Operator Mary
as Frank Schmidt (O)perational (S)upport (P)ackages, (M)aterial, Maintenance, Management, U.S.N.R. / Parker
as Robert Bouchet, Tech Sgt., A.U.S. / Albert Bernardi
as Amadeus Brink
as Rodney "Gates" Parrish / Raoul Josse
as Field
as Col. Crawson
as Marcel Aubert
as Gen. Donovan
as Gerard
as Madame Prideaux
as Arnheim
as Claudette (uncredited)
as German Radar Captain (uncredited)
as Electronics Engineer (uncredited)
as German Soldier (uncredited)
as American Soldier (uncredited)
as MP NCO (uncredited)