Chasing UFOs

Armed with night vision gear and under the cover of darkness, the team scours the site of an alleged alien spacecraft crash in Roswell, N.M.

The team investigates reports of strange lights in the skies over two Texas towns.

Residents in central California report being followed after witnessing unusual objects in the night skies.

The team heads to Colorado to investigate reports of animal mutilations and stories of alien abduction.

The team investigates reports from hundreds of people concerning a triangular formation of lights in the skies over Phoenix, Ariz.

An alien investigation around the Kennedy Space Center.