Season 4
Episode Guide
Tower of Babel
S4
E1
Apr 25, 2017
Once dismissed as a fable, new evidence is revealing that the biblical Tower of Babel may have actually existed.
Riddle of Petra
S4
E2
May 2, 2017
Follow archaeologists as they use new evidence to unlock the mystery of why the ancient city of Petra was abandoned.
Stonehenge Mystery
S4
E3
May 9, 2017
Was Stonehenge built to be an observatory, a cathedral, or was it a mass grave? Experts reveal its shocking secrets.
Headless Gladiators of York
S4
E4
May 16, 2017
Visit what is perhaps the world's largest gladiator cemetery, not in Rome, but over 1,000 miles away in northern England.
Plagues of Egypt
S4
E5
May 23, 2017
Enter ancient temples, the crater of a volcano, and a high-tech lab as we unlock the secrets of the plagues of Egypt.
Shrunken Heads
S4
E6
May 30, 2017
Learn the science behind head shrinking and how this ancient ritual exploded into a gruesome, Victorian-era craze.
Bog Bodies
S4
E7
Jun 6, 2017
See how dozens of mummified corpses in European bogs are providing a remarkable glimpse into the past.
Garden of Eden
S4
E8
Jun 12, 2017
Could this archaeological wonder, which predates Stonehenge by 6,000 years, be linked to a real Garden of Eden?