"The Truth About UFOs" is the second season's fourth episode of the documentary series The UnXplained , hosted by William Shatner, which originally aired on August 1, 2020. The 42-minute episode explores various theories regarding UFOs, including secret military technology and extraterrestrial possibilities. The episode is available for streaming on Tubi tubitv.com/tv-shows/200035534/s02-e04-the-truth-about-ufos and Amazon Prime Video. The UnXplained S02:E04 - The Truth About UFOs - Tubi