Ben Hansen heads down to Florida to investigate a woman's claim that an extraterrestrial approached her in her backyard. He wonders if this highly credible sighting is connected to a similar 1955 incident known as the Kelly-Hopkinsville Encounter.

Evidence of a possible extraterrestrial breeding program sends Ben Hansen to the Bay Area, San Francisco, California, in search of answers about alien-human hybrids. He suspects there may be a link to the Betty and Barney Hill case, one of the world's most famous abduction stories.

The small town of Dulce, New Mexico, may harbor one of America's darkest secrets – an underground alien base. Ben Hansen travels to New Mexico to figure out if the rumors are true and uncovers multiple reports of UFO sightings, alien abductions and more.

A startling new report claims a prominent astrophysicist worked on an aircraft reverse-engineered from the parts of downed UFOs. Ben Hansen investigates.

While thousands of people witness UFOs every year, only a handful claim to have been abducted. Piles of evidence corroborate their stories, yet they are not taken seriously. Ben Hansen sets out to discover exactly why these claims are swept under the rug.

In 1997, over 20,000 people witnessed bright lights hovering over Phoenix, AZ. Ben Hansen investigates these and other UFO sightings.

In 2017, three classified videos of Navy pilots encountering UFOs were leaked. Ben Hansen digs deep to find the truth behind these military sightings.

Over the past year, numerous UFO sightings have been reported in Kecksburg, Pennsylvania. Are these current sightings linked to an infamous incident in 1965?