The Twelve Dancing Sisters

Private Investigator, Chloe Martinez, has had some strange cases but this is the first one that has scared her to death. Twelve sorority sisters disappear every Friday night and no one knows where they go. All of the clues lead to the secretive world that Chloe narrowly managed to escape years ago. If she doesn't take case these girls might not survive another night. But if she does take the case, Chloe might not be able to escape that world a second time.