Die Sexfalle (1997)

Eva works as a decoy. Her job is to test husbands for their fidelity. Her good friend Corinna gives her a particularly well-paid assignment. She is to seduce Stefan, the husband of the very wealthy Christiane Reedmann, and lure him into a trap. A short time later, Christiane is killed and all the evidence points to Eva as the murderer. Now Eva herself is caught in the trap.