On the Canadian-US border lies a vast and brooding lake that hides a dark history. For Native Americans it’s an ancient and sacred site home to underwater spirits. But recently something has risen up from the murky depths to attack swimmers and stories abound of a nightmarish invasion of primordial bloodsuckers. Stream Full Episodes of : https://www.animalplanet.com/tv-shows/ Subscribe to Animal Planet: https://www.youtube.com/channel/UCkEBDbzLyH-LbB2FgMoSMaQ?sub_confirmation=1 Join us on Facebook: https://www.facebook.com/AnimalPlanet Follow Animal Planet on Twitter: https://twitter.com/AnimalPlanet Follow Animal Planet on Instagram: https://www.instagram.com/AnimalPlanet/