Unidentified: Inside America's UFO Investigation

Alien Encounters: Fact or Fiction

Chasing UFOs

UFO Witness

Craig Charles: UFO Conspiracies

UFO-SPOT

The Proof Is Out There

NASA's Unexplained Files

Close Encounters

UFO Europe: The Untold Stories

Hangar 1: The UFO Files

Encounters

UFO

Top Secret UFO Projects Declassified

Encounter: UFO

Evidence of the Unexplained 

The Secret of Skinwalker Ranch

In Search of Aliens

Beyond: UFOS and the Unknown

Investigation Alien