Massacre(1989)

Massacre is a horror film that weaves together a real-world killing spree with supernatural terror. When a prostitute is murdered by a deranged killer near a film set, a desperate director decides to hire a genuine medium to conduct a séance with his cast and crew, hoping to inject authenticity into his horror script. The ceremony goes catastrophically wrong when an evil spirit attacks the medium. As cast members begin dying one by one, detective Walter races to protect his girlfriend Jennifer, the film's lead actress, from becoming the killer's next victim. The line between the horror being filmed and the horror unfolding in reality blurs dangerously as both supernatural and human evil converge.