A lonely man is taunted by the voice of a woman he once knew.

Friedrich is a wealthy, handsome German soldier fighting in World War II. His unit is stationed in Poland and occupies the estate of Countess Elzbieta. Forced to remain in her presence, Friedrich begins to pursue Elzbieta out of boredom.

A Swiss bank discovers some of its clients are becoming the victim of a brilliant blackmailer. The bank's president contacts David Christopher, a former agent with the U.S. Treasury, to help discover who the blackmailer is and to foil his plot. As Christopher delves into the mystery, he uncovers a complicated web of intrigue, car chases, and shoot-outs that takes all of his wits to unravel.