Walking in the woods, you think you spy a hairy face and beady eyes looking at you from the thick trees. Was it a beast of legend? Reports of Bigfoot, the Loch Ness monster, and other cryptids come from all over the world. Could they be true? Researchers use thermal video cameras, night-vision goggles, drones, and other tools to investigate. Get an inside look at all the high-tech gear used to hunt for elusive cryptids.