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Stories of alleged alien encounters are examined in this series.
Season 4, Episode 20
October 1, 2016
Experts predict when humans can expect to make first contact with aliens.
Season 4, Episode 19
September 24, 2016
Examining whether biological life is merely a stepping stone for a universe dominated by alien artificial intelligence.
Season 4, Episode 18
September 17, 2016
Experts discuss their findings related to communication with extraterritorial intelligence.
Season 4, Episode 16
September 1, 2016
Exploring incidents where UFO sightings have been witnessed by large groups of people in cities.
Season 4, Episode 15
August 27, 2016
Featured: Between 1981 and 2011, cameras on NASA space shuttles have picked up many images of UFOs that experts still struggle to explain.
Season 4, Episode 14
August 4, 2016
A study of UFO reports filed by law enforcement.
Season 4, Episode 13
July 28, 2016
A look back at the year 1947, which saw an unprecedented wave of UFO sightings.
Season 4, Episode 11
July 7, 2016
Hard-to-explain photos are examined.
Season 4, Episode 12
August 1, 2015
The existence of UFOs is investigated to explore the possibility that they may be from Earth.
Season 4, Episode 10
June 6, 2015
Exploring whether there is an alien presence already on Earth.
Season 4, Episode 9
May 30, 2015
Exploring the travel challenges alien spaceships face. Included: a look at whether humans can tackle interstellar flight.
Season 4, Episode 8
May 23, 2015
Theories about why aliens are interested in visiting Earth are presented. Included: the allures of the human mind and human civilization.
Season 4, Episode 7
May 16, 2015
Information obtained from people who've experienced alien abductions is the focus.
Season 4, Episode 6
May 9, 2015
Exploring how international governments investigate UFO sightings and the secrecy in which they shroud their findings.
Season 4, Episode 5
Exploring whether fighter jets provide adequate defense security against UFOs.
Season 4, Episode 4
May 2, 2015
An investigation into a possible secret space force operated by America.
Season 4, Episode 3
The U.S. government's classified and declassified investigations into UFO sightings are the focus.
Season 4, Episode 2
April 25, 2015
Exploring the increase of UFO sightings that occurred in the spring of 1952.
Season 4, Episode 1
Examining the possible components of aliens' protective second layer of skin.
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