2 - 1Secrets of D-Day Jun. 03, 2019- 2 - 2Secrets of New York City Jun. 10, 2019
- 2 - 3Killer U-Boats Jun. 17, 2019
- 2 - 4Buried Secrets of the Gold Rush Jul. 01, 2019
- 2 - 5Secrets of the Civil War Jul. 22, 2019
- 2 - 6Lost Nukes of The Cold War Jul. 29, 2019
- 2 - 7Secrets of The Spanish Armada Aug. 05, 2019
- 2 - 8Pacific War Megawrecks Aug. 12, 2019
- 2 - 9Thai Cave Rescue Sep. 02, 2019
- 2 - 10London's Secret History Sep. 09, 2019
- 2 - 11Secrets of Loch Ness Sep. 16, 2019
- 2 - 12Hitler's Killer Warships Sep. 23, 2019
- 2 - 13Lost Giants Sep. 30, 2019
- 2 - 14Pacific Shockwave Oct. 07, 2019
- 2 - 15Rise of The Roman Empire Oct. 14, 2019