I'm don't want to sound like I'm bragging or anything but I totally saw the whole cannibal thing coming a mile off and here is my reasoning:
I knew the guys at the camp were very suspicious and I was on alert looking out for something, I first suspected them as cannibals when you first walk around the farm and I spoke to the mother at the house and asked her about where all the workers went and she gave a strange answer of... oh well they went about there own ways, and if it's a dairy farm where are they getting the meat? they can't just be living on milk. Also the whole episode centred around food "starved for help" and it seemed it was building up to the meal as the climax I just knew that mark would not be rejoining us when he got hit by the arrow and taken inside, and immediately thought that later when asked where he is we'd be given the cliche horror movie answer of "oh he's resting..." or something. Also it'd be a hilarious irony that they acting worse than the undead, as 'living zombies' eating the flesh of other people consciously, reaffirming that hell is other people.
OK I'll stop my rambling now, I still very much enjoyed the episode and I'm wondering if they gave these hints to make people think they're very clever for working it out before the whole looked room in the barn, did anyone else expect cannibals or just something sinister? and when did you become suspicious?