Skinwalker Ranch is a hotbed for paranormal activity. There have been sightings of strange creatures, cattle mutilations and UFOs. So, it's time to find out what's really going on and whether the US government know more than they're letting on. Experts investigate the series of US government experiments and dig into strange happenings at Skinwalker Ranch. Ultimate Mysteries dives deep into the potentially paranormal and supernatural mysteries that have never been solved.