Season 4 Episode
- Season 4 Echoes of the Lost Mountaineer
- Season 4 Secrets of the Antarctic Abyss
- Season 4 Woolly Mammoths Last Stand
- Season 4 Battlefield Beneath the Alps
- Season 4 The Giant Penguin Enigma
- Season 4 The Patagonia Ice Dragon
- Season 4 Ice Age Battlefield
- Season 4 Siberian Death Mask
- Season 4 Frozen Secrets of Prehistoric Warfare
- Season 4 The Donner Party's Lost Legacy
Secrets in the Ice - Season 4 Episode 5 The Giant Penguin Enigma
8.30 43 minutes The Giant Penguin Enigma: Mauro De Mauro's disappearance in Italy reveals remains in a Mount Etna cave, linked to mafia ties and a 1962 assassination.
