...That seems to be the case with “The Possession,” yet another film about an evil spirit that tries to possess its host. And it’s based on a true story. You know, like how “The Return of the Living Dead” is based on real events. Yeah, sure. With a 35% score on Rotten Tomatoes, critics aren’t buying it. That is, unless you’re Roger Ebert, who gave it 3.5 stars.