The real twist of The Invitation 2015 ending is far more unnerving and complicated than expected. The Invitation presents as an isolated event in which a group of friends is lured by a grieving mother and her new partner so that they can be ritualistically murdered. As the night progresses and the house guests are whittled down in a series of attacks, the tension revolves around the survivors’ attempts to escape the house in which they have become trapped. All they need to do is find a way out, and then they will be safe.