Regina "Reggie" Lampert, a wealthy expatriate living in Paris, returns from a vacation to discover her husband Charles is dead, their apartment emptied, and their assets missing. She is contacted by Hamilton Bartholemew, a CIA administrator, who reveals that Charles was involved in the theft of a significant amount of money during World War II. The stolen money, which was never recovered, is now sought by three sinister men who believe Reggie possesses it. Her life becomes increasingly complicated as she receives threatening messages and confrontations from the three men, each insisting that she can reveal the location of the missing fortune.

Things take an even more perplexing turn when Reggie becomes romantically entangled with Peter Joshua, a charming stranger she met on her vacation but who appears to be involved in the spiraling series of mysterious events. As Reggie attempts to navigate her increasingly dangerous predicament, she must decipher who she can truly trust, unravel the clues left behind by her late husband, and uncover the truth about the stolen money, all while evading the menacing figures closing in on her. The tension mounts as the various characters' true motives gradually come to light, leaving Reggie to piece together the mystery that ties them all together.