When one thinks of “demon possession movies”, the Exorcist immediately comes to mind. But the Italians have an answer to every genre and it is no surprise that Mario Bava has his own demon possession movie to study.
He made Lisa and the Devil with the always foxy Elke Sommer in order to cash in on the success of the Exorcist. But he made another possession movie as well with Shock.
Shock is about a young lad named Marco whose body has been possessed by his own father who died in a plane crash. His mother becomes really nervous because it seems her son knows all about her affairs. So this is a bit of a mystery…Is Marco really demon possessed by his father or is it all in the guilty mind of his slut mother?