In the program, leading physicists delve into the mystery of whether time travel is possible, and if so, how one might go about building a time machine.
Fall of the Leaning Tower
Time Travel
The Killer's Trail
Island of the Spirits
Decoding Nazi Secrets
Voyage of Doom
Electric Heart
Tales from the Hive
Lost on Everest
Secrets of Lost Empires: Medieval Siege (1)
Diamond Deception
Secrets of Lost Empires: Pharaoh's Obelisk (2)
Trillion Dollar Bet
Secrets of Lost Empires: Easter Island (3)
Mystery of the First Americans
Secrets of Lost Empires: Roman Bath (4)
Lost Tribes of Israel
Secrets of Lost Empires: China Bridge (5)
What's Up with the Weather?
Stationed in the Stars
The Vikings