A thirtysomething couple invites another couple to dinner in the suburban pad to which they’ve recently moved. Complications ensue. The less you know about this unsettling chamber-piece drama, the better. Suffice it to say, it deftly and deliciously wrongfoots the audience all the way to its enigmatic finale. The pieces of the film’s carefully constructed jigsaw puzzle elegantly slot together; even then, everyone will see a slightly different picture.