Mercy

Detective Catherine Palmer (Ellen Barkin) is on the trail of an elusive serial killer. She meets Vickie Kittrie (Peta Wilson), a member of an exclusive club of women who engage in secret sessions of bondage and S&M, leading to a brief lesbian encounter. As Palmer investigates further, she discovers that each victim belonged to this club of prominent, sexually experimental women. To catch the killer, Catherine must trust Vickie to guide her through the dangerous and illicit underground.