Kormákur, who made the highly original 101 Reykjavik, is clearly saying something pessimistic about his homeland and, as a film-maker, has the means to do so to some effect.

A disturbing, bleak, multilayered mystery that will not just worm under your flesh but also wriggle inside your nightmares.

The burden of this Icelandic procedural thriller will put a chill in your bones, if the lugubrious, wind-whipped coastal setting hasn't done already.

This is like Iceland’s Gone Baby Gone. A, forgive the pun, chilling procedural about generational sin. It’ll make you want to lock your door, get under a nice blanket with a cup of cocoa and shut the world out.