Sins of Desire (4.0)
Movie · 1993 · 1 h 27 min · Thriller
When a young girl dies mysteriously after being treated at a sex therapy clinic, her sister Kay goes undercover to find out who is responsible.
Directed by: Jim Wynorski
Starring Gail Harris, John Henry Richardson, Delia Sheppard, Tanya Roberts, Carrie Stevens, Nick Cassavetes, Pamela Pond, Jeana Wilson, Lou Bonacki, Jan-Michael Vincent
We don't know where to watch it in the US.