William Shatner investigates the unexplained phenomena of UFOs and historical alien intervention. While its true that nowadays it is only Donald Trump supporters and people from Bonnybridge who believe UFOs are alien spacecraft, this nevertheless still works well as a fun historical artefact. Much of the material covered also appeared in 'Arthur C. Clarke's Mysterious Word' such as the Nazca lines, the crystal skulls, the giant balls of Costa Rica, the giant figures on the landscape in England and South America, as well as plenty of stuff on UFOs. Despite much of its sometimes dubious content, like 70's Bigfoot documentaries, its still an earnest and entertaining look back at weird stuff.