The Shakedown.

Femme fatale Tommy and her partner in crime, Max, are working together to shake down a rich mark, Werner Lang, and his wife Vanessa by preying on their mutual infidelities. Threatening to reveal the Langs' affairs to one another, Tommy and Max successfully pressure the couple to fork over wads of cash. Distinctions between good and evil fade away as it becomes clear that the Langs are not innocent victims, but the twisted masterminds in an increasingly dangerous sexual game.