Elvis (Bruce Campbell) is alive but not exactly well, living in a decrepit east Texas rest home after having changed places with an impersonator years before his supposed death. He and a fellow resident who thinks he’s JFK (Ossie Davis) wind up doing battle with an evil Egyptian deity that looks like a giant cockroach. Adapted from a story by Joe R. Lansdale, this might have squeaked by as a half-hour Twilight Zone episode, albeit with jokes about toilets and erections in old age. Writer-director Don Coscarelli piles on unpleasant details and cynical asides as if they were the stuff of wisdom, though they seem intended to produce guffaws rather than thoughts.