S39 E1: Engineering Ground Zero

S39 E2: Surviving the Tsunami

S39 E3: Finding Life Beyond Earth: Are We Alone?

S39 E4: Iceman Murder Mystery

S39 E5: The Fabric of the Cosmos: What is Space?

S39 E6: The Fabric of the Cosmos: The Illusion of Time

S39 E7: The Fabric of the Cosmos: Quantum Leap

S39 E8: The Fabric of the Cosmos: Universe or Multiverse?

S39 E9: Deadliest Volcanoes

S39 E10: Bombing Hitler's Dams

S39 E11: 3D Spies of WWII

S39 E12: Mystery of a Masterpiece

S39 E13: Ice Age Death Trap

S39 E14: Separating Twins

S39 E15: Cracking Your Genetic Code

S39 E16: Hunting the Elements

S39 E17: Deadliest Tornadoes

S39 E18: Why Ships Sink

S39 E19: Secrets of the Sun