Security camera catch an inexplicable UFO on tape, in this scene from Season 4, "The Return."

New episodes of The Secret of Skinwalker Ranch, Tuesdays at 10/9c. Stay up to date on all your favorite The HISTORY Channel shows at http://history.com/schedule.

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Anchored by never-before-seen footage of the ranch and what it contains, the series will feature a team of scientists and experts who will conduct a daring and thorough search of this infamous 512-acre property located in Utah’s Uinta Basin in an attempt to find out the ‘who?’ ‘what?’ and ‘why?’ behind more than 200 years of UFO and paranormal related mysteries.

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.