Young widow Louise Pearlie seizes a chance to escape the typewriters and files of the Office of Strategic Services, the US's World War II spy agency, when she's asked to investigate a puzzling postcard referred to OSS by the US Censor. She and a colleague, Collins, head off to St. Leonard, Maryland, to talk to the postcard's recipient, one Leroy Martin. But what seemed like a straightforward mission to Louise soon becomes complicated. Leroy and his...