The Killing of a Sacred Deer is the cinematic equivalent of being slowly choked out. At the start it’s uncomfortable, but tinged with a degree of humour at the ridiculousness of the situation. The clipped dialogue that is becoming Yorgos Lantihmos’s trademark makes regular conversations awkward. However, it also makes them funny. The matter of fact way that Colin Farrell’s Steven Murphy tells his colleague that his daughter has started menstruating catches you off guard and the laugh escapes your lips before you can stop it.