Sisters of Death (1977) Cult Classic Horror/Thriller

What was meant to be a secret initiation turns into a deadly reunion...

Seven years after a tragic sorority stunt ends in death, the surviving sisters are mysteriously invited to a remote mansion. One by one, they begin to disappear and it becomes clear someone wants revenge. But who... and why now?
Twisted secrets. A locked estate. No escape.
Sisters of Death is directed by Joseph Mazzuca and produced by Joseph Mazzuca and Gil Lasky. It is a suspenseful, slow-burning 70s horror gem packed with mystery, betrayal, and a killer who knows exactly what they're doing.

If you're into vintage thrillers, dark sorority secrets, and that classic grindhouse vibe this is one film you can't miss.