Demonicus by Jay Woelfel

5.10

On a hiking trip in the Italian Alps, James discovers an ancient burial cave filled with gladiator artefacts. He becomes possessed by the spirit of Tyranus, a demon gladiator, and goes on a killing spree to revive the true spirit of Demonicus. A professor, Gina, and her students are to be the sacrifices to the demon Tyranus. Can they outwit Demonicus before becoming offerings to the evil god?