A federal agent becomes obsessed with a woman believed to have murdered a string of wealthy husbands for their money, while changing her identity completely before moving on to the next victim. Failing to convince her superiors of her theory, the detective sets out in pursuit - but when she finally tracks the killer down an unexpected bond develops between them. Thriller, with Debra Winger, Theresa Russell and Dennis Hopper.

Federal agent Alexandra Barnes believes that Catherine Petersen is a serial killer who marries rich men and then murders them for their money. But since Catherine is seemingly a master of disguise and has multiple identities, Alexandra can't prove anything with conventional detective work. With no other option, she goes undercover, pursuing the same man as Catherine, and hoping that Catherine will slip up and reveal her true identity.