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| Aflevering | Eerste uitzending |
|---|---|
| S42E01 - Big Bang Machine | 14/01/2015 |
| S42E02 - Sunken Ship Rescue | 21/01/2015 |
| S42E03 - Sinkholes—Buried Alive | 28/01/2015 |
| S42E04 - Colosseum: Roman Death Trap | 11/02/2015 |
| S42E05 - Petra: Lost City of Stone | 18/02/2015 |
| S42E06 - Hagia Sophia: Istanbul’s Ancient Mystery | 25/02/2015 |
| S42E07 - The Great Math Mystery | 15/04/2015 |
| S42E08 - Invisible Universe Revealed | 22/04/2015 |
| S42E09 - Nazi Attack on America | 06/05/2015 |
| S42E10 - Lethal Seas | 13/05/2015 |
| S42E11 - Chasing Pluto | 15/07/2015 |
| S42E12 - Nuclear Meltdown Disaster | 29/07/2015 |
| S42E13 - Dawn of Humanity | 16/09/2015 |
| S42E14 - Arctic Ghost Ship | 23/09/2015 |
| S42E15 - Secrets of Noah's Ark | 07/10/2015 |
| S42E16 - Cyberwar Threat | 14/10/2015 |
| S42E17 - Animal Mummies | 28/10/2015 |
| S42E18 - Making North America: Origins | 04/11/2015 |
| S42E19 - Making North America: Life | 11/11/2015 |
| S42E20 - Making North America: Human | 18/11/2015 |
| S42E21 - Inside Einstein's Mind | 25/11/2015 |