Former Twisted Sister front man Dee Snider looks pretty darned scary: teeth filed to points, torso and face covered with tribal tattoos, scalp crowned with industrial pink dreadlocks, piercings everywhere you can see and some places you can't. But movies --
even horror movies with relatively modest ambitions -- don't live by scary-looking super creeps alone. Carleton Hendricks (Snider) is the guy you don't want to meet in an Internet chat room, especially if you're a gullible teenage girl. Friends Genevieve (Linda Cardellini) and Tiana (Amal Rhoe) get
friendly online with Hendricks -- who, in homage to The Exorcist,
goes by the snappy name "Captain Howdy" --...