The best Kelly Blatz’s horror movies

Donna's senior prom is supposed to be the best night of her life, though a sadistic killer from her past has different plans for her and her friends.

During an all-night, drug-fueled party at an abandoned asylum known for the horrific treatment of its patients, a group of ordinary teens decide to experiment with the occult, mysteriously leading to a violent possession. In an effort to find help, the group rushes to escape, only to find themselves locked inside with no means of communication. Tempers flare, trusts are broken and in attempt to save one of their friends possessed by the demon, the amateurs try to perform an exorcism. Instead of solving the problem, and unbeknownst to them, they unleash an even more powerful and vengeful spirit, one with a distinct motive and which wants them all dead. The teen's only chance of survival is to uncover the asylum's deep mysteries and find a way out before it's too late.

Five college friends choose to spend their vacation debauching at the riverside. They find the perfect place to camp out, but end up crossing paths with twin brothers, Simon and Stanley. The twins then begins to knock off the campers in some extremely creative (and extremely gruesome) ways.

When the citizens of a small evangelical town systematically begin committing suicide, a young girl struggling to reconcile her Christian upbringing with her desire to experience the outside world finds her faith put to the ultimate test.

A couple's holiday romance is thrown into chaos as they are afflicted by a malicious force.

High school seniors on a geology field trip to a cave encounter problems not listed in the course outline.