Anyone with more than a passing interest in the weird and wonderful will have seen, if not heard of, the Patterson-Gimlin footage, the cryptoozological equivalent of the Zapruder film. Shot in 1967 in the forests of Northern Carolina, it purports to show a large, ape-like creature with an elongated forehead striding purposefully into the trees. Unlike an ape, the creature walks upright, and, unlike the furtive behavior of any other forest creature, it has the casual air of the average human being popping over to the 7-11 to pick up a gallon of milk. Most people who see the footage wonder what the hell this damn thing is, but the sibling directors of Sasquatch Sunset have a couple more questions that they’d like answered. Like, where is it going? And what does it do all day?