S4 E1: The Bigfoot Files

S4 E2: UFO Over the Andes, the Ohio Grassman, and Ancient Horn Mystery

S4 E3: Men In Black Calls, Old Kentucky Aliens, and Mysterious Eclipse

S4 E4: Orb & Crash Debris, KGB UFOS and Aliens, and Superhuman Reflexes

S4 E5: Beastly Howls, Holloman Air Force Base UFO, and the Cabin that defies Gravity

S4 E6: Mystery Bird Monster, Ancient Alien Satellite, and Behemoth of the Sea Bottom

S4 E7: Caddy the Cadborosaurus, the Lubbock Lights, and Living Mummy

S4 E8: The UFO Files

S4 E9: Falcon 9 Mystery, Demonic Wall Climber and Leningrad Alien Fetus

S4 E10: Worm in the Sky, Skeletal Mystery Remains and Thessaloniki Mystery Sounds

S4 E11: Spontaneous Human Combustion, the Tell-Tale Hum and UFO Explosion

S4 E12: Teen UFO, Flying Dinosaur Over Idaho and Headless Goats

S4 E13: Swamp Beast Sighting, Martian Conspiracy and Transparent Mexican Sea Monster

S4 E14: Wooly Mammoth Sighting, Ohio Bigfoot Howl and Killer Robot

S4 E15: Classic UFO, Headless Zombie Fish and Crying Virgin Mary

S4 E16: Honey Island Swamp Monster, Sphere Sightings and Abominable Shark Killer

S4 E17: UFO Over Pakistan, Antarctic Dino-whale and Dead Bird Floating

S4 E18: Chupacabra Carcass, Alien Minerals and Spawn of Nessie