A fast-paced comedy thriller from award-winning writer Steven Moffat, The Unfriend explores what happens when politeness goes far too far.

When Peter and Debbie meet the charming Elsa on holiday, they never expect to see her again. But when she unexpectedly arrives at their home, they soon begin to suspect their friendly guest may not be quite who she seems. Too polite to ask her to leave - and increasingly terrified of what she might do - the couple find themselves trapped in a hilariously awkward situation of their own making.

Sharp, witty and brilliantly uncomfortable, The Unfriend is a darkly comic look at manners, middle-class anxiety and the dangers of being too nice.