solid, smart British thriller in the vein of Hand That Rocks The Cradle. The guy who played the Governor on Walking Dead (don't hold it against him) is in it. Realistically creepy and doesn't give away the farm too early. A tolerable amount of far-fetchedness (yeah I'll make up words...what of it?) Can see the director David Farr's theatre background in the way it was shot. Same guy wrote Hannah and is writing/directing The Night Manager series apparently.