Icelandic folk horror Lamb stars Noomi Rapace as a grieving mother who adopts a mysterious newborn

The Swedish-Hollywood action star Noomi Rapace (The Girl With the Dragon Tattoo; Prometheus) might get top billing in Valdimar Jóhannsson’s creepy-comic folk horror, but it’s the sheep who steal the show.

Lamb takes place on a remote farm – a sort of cabin-in-the-woods set-up transplanted to…