From the hunt for Bigfoot and mysterious patterns that could contain an alien code to the strange properties of the Roswell Rock, this In Search of Aliens marathon investigates clues that continue to defy easy explanation. #InSearchOf Subscribe for more from In Search Of and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: https://www.history.com/shows/in-search-of Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Twitter - https://histv.co/Twitter Hosted and executive produced by Emmy-nominated actor Zachary Quinto, and inspired by the iconic 1970s’ franchise, the series will examine unexplained phenomena from all over the world. UFOs and paranormal mysteries remain relevant as the Pentagon recently acknowledged a secret UFO program which investigated sightings of UFOs from 2007 – 2012. HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.