The Hollow Tree is a 2007 film directed by Patrick Steward and co-produced by Haydenfilms. It tells the touching story of a runaway who encounters a mysterious stranger who enlightens him to the reality of “home".
Miss Sidley, an experienced, no-nonsense teacher starts to lose her bearings when she suspects one of her students, Robert, is not quite human. In a momentary reflection in her eyeglasses she thinks she may have seen Robert changing into a monster. She soon discovers that not only does Robert change, but he may not be the only one of his kind. Sidley must get rid of them before it's too late.