In July 2008, the carcass of an animal washed up on the beach at Montauk Point Long Island. Local beachcombers are used to seeing dead animals. Seagulls, fish, crabs, even the occasional whale. But they had never seen anything like this. Animal experts were brought in to identify it. They were stumped. It looked like part dog, part reptile and part rodent - with the beak of a bird. This animal, whatever it was, became known as the Montauk Monster. But where did it come from? There could be only one answer. Plum Island - just a few miles from where it was found. Locals had heard rumors that this was a top-secret government facility that created bioweapons, engineered animal hybrids and maybe even experimented on people. Sounds like a wild theory. But then another animal washed up on the beach. And then another animal. And then two more. In 2010, the rumors about Plum Island seemed to be true when something else was found on the beach. This time it wasn't a strange animal. It was a body.