Demonstone (1990)

Two U.S. Marine investigators, older tough Marine Colonel Joe Haines an his younger friend Andy Buck , investigate a series of grisly murders in Manila, Philippines. They soon discover that he crimes are tied to an amulet with a 400-year-old curse on it that has unleashed a supernatural force that wants revenge. Buck falls for TV reporter Sharon Gale who's there to cover the story. Unfortunately, she gets possessed and becomes an unstoppable killing machine.