Colin Farrell becomes a troublingly perfect Agamemnon in this new film by Yorgos Lanthimos. The film pushes reality so far and with such patient, systematic determination that it reveals truths that we all somehow know but no longer wish to acknowledge.

The Killing of a Sacred Deer opens grandly. An extended close-up of open-heart surgery, performed to the grave and moving music of one of Schubert’s Stabat Maters. Still looking? Keep looking now and you might still be able to keep on looking later on. The music and sound design will help keep you there, will seduce and hypnotise you.