Played By: Kathleen Turner
Movie: Body Heat (1981)

The heat is on during a Florida summer when Matty Walker strikes up an affair with an unscrupulous lawyer (William Hurt), and embroils him in her plot to take her husband (Richard Crenna) out of the picture, so as to avoid that pesky pre-nup business. Naturally by the time he stops to consider that a woman out to ruthlessly kill her husband might not be the most trustworthy partner, it's way too late.