Toni Collette and Adam Scott head a squabbling American family in this tongue-in-cheek horror comedy.

After a disgruntled 12-year-old boy rips up his letter to Santa on Christmas Eve, a cloven-hoofed monster – a dark version of Santa Claus derived from Alpine folklore – is unleashed along with his evil minions.

Collette and Scott do sterling stuff as the beleaguered mum and dad, but the film belongs to the monsters, splendidly realised by a combination of puppetry, costumes and CGI.