There’s a monster in the Nahuel Huapi Lake. In the twilight, it spreads itself out across the surface of the water like a taut cowhide, grasping at its victims with sharp claws. Another monster also lurks in the surroundings of the lake, which is close to Bariloche in the Argentine Andes.

Fear lurks beneath the snow-capped slopes of an Argentine ski resort in this fascinating puzzle-box documentary. Slipping into the realms of a psychological thriller, Manque La Banca’s FIPRESCI prizewinner brings together a knotted web of stories, leaving us to piece together left-behind clues.