Eden Lake (2008)
Eden Lake is probably the most realistic horror film on this list. Instead of fearing the unknown or a killer that can’t be killed, your dealing with something much scarier – people with no morals. Eden Lake has some of the most heartbreaking and shocking scenes in horror. It makes you root for the protagonists and absolutely hate the teenagers they’re up against. This probably will make you weary of your neighbors when you’re camping, but it never hurts to prepare for the worst.