Aliens: Actor Zachary Quinto hosts this reboot of the 1970s documentary series that explores the unexplained, beginning with a search for extraterrestrial life. (S1, ep 2)
Artificial Intelligence: Host Zachary Quinto speaks to experts in the world of artificial intelligence and investigates Facebook's AI project which was shut down in 2017. (S1, ep 6)
The Alien Code: Giorgio A Tsoukalos investigates famous mysteries from every corner of the globe. Could they share links that connect them to the extraterrestrial? (S1, ep 10)
The Mystery Of Nazca: Giorgio Tsoukalos heads to Peru to investigate whether the strange symbols covering its desert floor are key to proving aliens once visited Earth. (S1, ep 9)
The Founding of America: Giorgio Tsoukalos investigates whether alien encounters influenced the establishing acts of the Founding Fathers as he travels to Washington DC. (S1, ep 8)
The Mystery Of Puma Punku: Experts explore the puzzling construction of Puma Punku in Bolivia. Could advanced technology have been used to carve the ancient temple complex? (S1, ep 7)
The Mystery Of The Cyclops: Experts investigate whether an advanced civilisation of giants built Malta's mysterious megaliths. Could they have had extraterrestrial help? (S1, ep 6)
Searching For Bigfoot: Experts investigate why sightings of Bigfoot are so often accompanied by reports of UFOs. Could the Sasquatch be an alien living in our midst? (S1, ep 5)
The Mystery Of Loch Ness: Giorgio Tsoukalos investigates whether sightings of the Loch Ness monster could be caused by a disturbance in the space-time continuum. (S1, ep 4)
Nazi Time Travelers: Experts join the trail of purported Nazi time travel device, Die Glocke. Did it really exist? And could it have been based on alien technology? (S1, ep 3)