
S01E01 Messengers
In 2008, sightings of strange lights in the sky over Central Texas attract media attention and ridicule. New radar data supports eyewitnesses' claims.
A close encounter at a children's school in a tiny Welsh village spurs a series of sightings. An astrophysicist theorizes about aliens and water.
Mass UFO sightings from the last 50 years fuel a global mystery in this docuseries featuring eyewitness accounts, expert interviews and new evidence.