It starts off as a creepily Lynchian meditation on the destabilising power of grief , flirts with the tropes of the Nordic fairytale , the occult mystery and the horror film , throws in a pretty basic critique of psychoanalysis for good measure , and then suddenly , bafflingly , sails way too close for comfort to the relentless and deadening torture porn of genre films like Saw and Hotel - which , incidentally , he claims not to have seen .