Charley (Anton Yelchin) is a teenager convinced that his new neighbor (Colin Farrell) is a vampire. Toni Collette plays the boy's disbelieving mother, who falls under the vampire's spell.

Peter Vincent (David Tennant) is a Las Vegas/British magician whose show revolves around horror movie imagery. Vincent claims to be a vampire expert, but when the teen turns to him for assistance, he is less than helpful.

Evil Ed (Christopher Mintz-Plasse) is Charley's friend who feels slighted that Charley has joined the vampire's coven.