Professor David Ash is invited to Edbrook to calm the fears of the elderly nanny of the Mariell family. Nanny Tess is seeing things, and Ash's book debunking such phenomenon makes him a good choice to set her mind at ease and convince her she is just tired and stressed. But soon after arriving David too begins to doubt his senses, and watching the odd behavior of the three grown Mariell children doesn't make his task any easier. In fact, he begins to think Nanny Tess isn't really just tired and...

1940, Linda Voss is a woman of Irish, Jewish-German parentage who loves the movies, especially films about war and spies. She gets a job at a New York law firm, after it's revealed she can speak German, fluently. As secretary and translator to Ed Leland, she begins to suspect that her boss is involved in espionage work. The two become lovers, and when America officially joins the Allies in fighting Hitler, Linda volunteers to go undercover behind enemy lines.