The Invitation is the new psychological thriller from Karyn Kusama (the superb Girlfight and the awful, messy sci-fi action thriller Aeon Flux, etc) and is a study in delusion, paranoia and suspicion. This is a slow burn horror story about a reunion of old friends that goes horribly wrong. Will (Logan Marshall-Green, recently seen in Madame Bovary, etc) has reluctantly accepted an invitation to attend a dinner party reunion with some old friends at the house he once owned with his ex-wife Eden (Tammy Blanchard). But since their divorce Eden now lives in the house with her new husband David (Michiel Huisman), whom she met on a retreat in Mexico while recovering from a nervous breakdown. Will is still grieving over the tragic death of his son, and is in a fragile emotional state. He begins to feel that something is not quite right about the gathering, but is he unnecessarily paranoid or does he have reason to be concerned? There are early portents that something is wrong, and a palpable air of uneasiness and distrust soon overtakes the gathering. When the hosts insist on playing a rather unsettling parlour game the awkwardness further enhances the growing sense of uneasiness. Writers Phil Hay and Matt Manfredi (Crazy/Beautiful, the dire buddy cop comedy Ride Along, etc) have created a cast of oddball characters to add to the creepy atmosphere. Most of the cast is not that well known, which works in the film's favour. John Carroll Lynch has a vaguely sinister and menacing presence as the mysterious stranger Pruitt. The action is confined to a single location and Kusama makes the most of the claustrophobic setting, slowly ramping up the tension until the film bursts into full on mayhem and carnage. The impact of the final shot is devastatingly effective as the full horror of what is happening is revealed.