“Wolf Hollow” (**1/2 out of four) was a mildly amusing horror comedy about a group of young filmmakers (Felissa Rose, Hannah Fierman, Lynn Lowry, and others) who venture out on a horror-film shoot in rural Pennsylvania and stumble onto a pack of werewolves who slaughter them one by one. Better-than-average for this type of thing, with some funny and tongue-in-cheek writing and style, although fairly conventional in its overall outline. Horror-film siren Rose is solid as usual even if this is no “Sleepaway Camp.”