S40 E1: Secrets of the Viking Sword
S40 E2: Forensics on Trial
S40 E3: Mystery of Easter Island
S40 E4: Ultimate Mars Challenge
S40 E5: Inside the Megastorm
S40 E6: Doomsday Volcanoes
S40 E7: Decoding Neanderthals
S40 E8: Rise of the Drones
S40 E9: Who Killed Lindbergh's Baby?
S40 E10: Building Pharaoh's Chariot
S40 E11: Earth From Space
S40 E12: Mind of a Rampage Killer
S40 E14: Ancient Computer
S40 E15: Australia's First 4 Billion Years: Awakening
S40 E16: Australia's First 4 Billion Years: Life Explodes
S40 E17: Australia's First 4 Billion Years: Monsters
S40 E18: Australia's First 4 Billion Years: Strange Creatures
S40 E19: Manhunt - Boston Bombers
S40 E20: Oklahoma's Deadliest Tornadoes