31x02: Who Killed the Red Baron?
31x01: Infinite Secrets
30x16: Secret of Photo 51
30x15: Deep Sea Invasion
30x14: Dirty Bomb
30x13: Lost Treasures of Tibet
30x12: Mountain of Ice
30x11: Battle of the X-Planes
30x10: Ancient Creature of the Deep
30x09: Last Flight of Bomber 31
30x08: Spies That Fly
30x07: The Orchid Hunter
30x06: Sinking City of Venice
30x05: Volcano's Deadly Warning
30x03: Lost Roman Treasure
30x02: Mysterious Life of Caves
30x01: Killer Disease on Campus
29x16: Why the Towers Fell
29x14: The Missing Link
