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Next episode- S1E1The Evidenceunavailable
- S1E2The Visitorsunavailable
- S1E3The Missionunavailable
- S1E4Closer Encountersunavailable
- S1E5The Returnunavailable
- S2E1Mysterious Placesunavailable
- S2E2Gods & Aliensunavailable
- S2E3Underwater Worldsunavailable
- S2E4Underground Aliensunavailable
- S2E5Aliens and the Third Reichunavailable
- S2E6Alien Techunavailable
- S2E7Angels and Aliensunavailable
- S2E8Unexplained Structuresunavailable
- S2E9Alien Devastationsunavailable
- S2E10Alien Contactsunavailable
- S3E1Aliens and the Old Westunavailable
- S3E2Aliens and Monstersunavailable
- S3E3Aliens and Sacred Placesunavailable
- S3E4Aliens and Temples of Goldunavailable
- S3E5Aliens and Mysterious Ritualsunavailable
- S3E6Aliens and Ancient Engineersunavailable
- S3E7Aliens, Plagues and Epidemicsunavailable
- S3E8Aliens and Lost Worldsunavailable
- S3E9Aliens and Deadly Weaponsunavailable
- S3E10Aliens and Evil Placesunavailable
- S3E11Aliens and the Founding Fathersunavailable
- S3E12Aliens and Deadly Cultsunavailable
- S3E13Aliens and the Secret Codeunavailable
- S3E14Aliens and the Undeadunavailable
- S3E15Aliens, Gods and Heroesunavailable
- S3E16Aliens and the Creation of Manunavailable
- S4E1The Mayan Conspiracyunavailable
- S4E2The Doomsday Propheciesunavailable
- S4E3The Greysunavailable
- S4E4Aliens and Mega-Disastersunavailable
- S4E5The NASA Connectionunavailable
- S4E6The Mystery of Puma Punkuunavailable
- S4E7Aliens and Bigfootunavailable
- S4E8The Da Vinci Conspiracyunavailable
- S4E9The Time Travelersunavailable
- S4E10Aliens and Dinosaursunavailable
- S5E1Secrets of the Pyramidsunavailable
- S5E2Aliens and Cover-Upsunavailable
- S5E3Alien Power Plantsunavailable
- S5E4Destination Orionunavailable
- S5E5The Einstein Factorunavailable
- S5E6Secrets of the Tombsunavailable
- S5E7Prophets and Propheciesunavailable
- S5E8Beyond Nazcaunavailable
- S5E9Strange Abductionsunavailable
- S5E10The Von Daniken Legacyunavailable
- S5E11The Viking Godsunavailable
- S5E12The Monolithsunavailable
- S6E1The Power of Threeunavailable
- S6E2The Crystal Skullsunavailable
- S6E3The Anunnaki Connectionunavailable
- S6E4Magic of the Godsunavailable
- S6E5The Satan Conspiracyunavailable
- S6E6Alien Operationsunavailable
- S6E7Emperors, Kings and Pharaohsunavailable
- S6E8Mysterious Relicsunavailable
- S6E9Aliens and Forbidden Islandsunavailable
- S6E10Aliens and The Lost Arkunavailable
- S6E11Aliens and Mysterious Mountainsunavailable
- S7E1Aliens and Stargatesunavailable
- S7E2Aliens in Americaunavailable
- S7E3The Star Childrenunavailable
- S7E4Treasures of the Godsunavailable
- S7E5Aliens and the Red Planetunavailable
- S7E6The Shamansunavailable
- S7E7Aliens and Insectsunavailable
- S7E8Alien Breedersunavailable
- S8E1Alien Transportsunavailable
- S8E2Mysterious Structuresunavailable
- S8E3Mysterious Devicesunavailable
- S8E4The Reptiliansunavailable
- S8E5The Tesla Experimentunavailable
- S8E6The God Particleunavailable
- S8E7Alien Encountersunavailable
- S8E8Aliens & Superheroesunavailable
- S9E1Forbidden Cavesunavailable
- S9E2Mysteries of the Sphinxunavailable
- S9E3Aliens Among Usunavailable
- S9E4The Genius Factorunavailable
- S9E5Secrets of the Mummiesunavailable
- S9E6Alien Resurrectionsunavailable
- S9E7Alien Messagesunavailable
- S9E8The Great Floodunavailable
- S9E9Aliens and the Civil Warunavailable
- S9E10Hidden Pyramidsunavailable
- S9E11The Vanishingsunavailable
- S9E12The Alien Agendaunavailable
- S10E1Aliens B.C.unavailable
- S10E2NASA's Secret Agendaunavailable
- S10E3Aliens and Robotsunavailable
- S10E4Dark Forcesunavailable
- S10E5The Alien Evolutionunavailable
- S10E6The Other Earthunavailable
- S10E7Creatures of the Deepunavailable
- S10E8Circles from the Skyunavailable
- S10E9The Alien Warsunavailable
- S10E10The Forbidden Zonesunavailable
- S11E1Pyramids of Antarcticaunavailable
- S11E2Destination Marsunavailable
- S11E3The Next Humansunavailable
- S11E4The New Evidenceunavailable
- S11E5The Visionariesunavailable
- S11E6Decoding the Cosmic Eggunavailable
- S11E7The Wisdom Keepersunavailable
- S11E8The Mysterious Nineunavailable
- S11E9The Hidden Empireunavailable
- S11E10The Prototypesunavailable
- S11E11Space Station Moonunavailable
- S11E12Russia's Secret Filesunavailable
- S11E13Beyond Roswellunavailable
- S11E14The Returnedunavailable
- S11E15Shiva the Destroyerunavailable
- S12E1The Alien Huntersunavailable
- S12E2Forged by the Godsunavailable
- S12E3The Mystery of Rudloe Manorunavailable
- S12E4The Alien Architectsunavailable
- S12E5The Pharaohs' Curseunavailable
- S12E6The Science Warsunavailable
- S12E7City of the Godsunavailable
- S12E8The Alien Frequencyunavailable
- S12E9The Majestic Twelveunavailable
- S12E10The Akashic Recordunavailable
- S12E11Voices of the Godsunavailable
- S12E12The Animal Agendaunavailable
- S12E13The Replicantsunavailable
- S12E14A Spaceship Made of Stoneunavailable
- S12E15The Alien Disksunavailable
- S12E16Return to Gobekli Tepeunavailable
- S13E1The UFO Conspiracyunavailable
- S13E2Da Vinci's Forbidden Codesunavailable
- S13E3The Alien Protocolsunavailable
- S13E4Earth's Black Holesunavailable
- S13E5The Desert Codesunavailable
- S13E6Area 52unavailable
- S13E7Earth Station Egyptunavailable
- S13E8Island of the Giantsunavailable
- S13E9The Takenunavailable
- S13E10The Sentinelsunavailable
- S13E11Russia Declassifiedunavailable
- S13E12They Came from the Skyunavailable
- S13E13The Artificial Humanunavailable
- S13E14The Alien Phenomenonunavailable
- S13E15Return to Marsunavailable
- S14E1Return to Antarcticaunavailable
- S14E2The Badlands Guardianunavailable
- S14E3Element 115unavailable
- S14E4The Star Gods of Siriusunavailable
- S14E5They Came from the Seaunavailable
- S14E6Secrets of the Mayaunavailable
- S14E7The Druid Connectionunavailable
- S14E8The Reptilian Agendaunavailable
- S14E9The Alien Infectionunavailable
- S14E10Project Hybridunavailable
- S14E11The Trans-Dimensionalsunavailable
- S14E12Islands of Fireunavailable
- S14E13The Constellation Codeunavailable
- S14E14The Nuclear Agendaunavailable
- S14E15The Alien Mountainunavailable
- S14E16The Alien Brainunavailable
- S14E17The Secrets of Stonehengeunavailable
- S14E18Food of the Godsunavailable
- S14E19Human Hieroglyphsunavailable
- S14E20The Storming of Area 51unavailable
- S14E21Countdown to Disclosureunavailable
- S14E22Secrets of the Exoplanetsunavailable
- S15E1The Mystery of Nan Madolunavailable
- S15E2The Relics of Roswellunavailable
- S15E3Destination Chileunavailable
- S15E4The Real Men in Blackunavailable
- S15E5The Mystery of the Stone Giantsunavailable
- S15E6The World Before Timeunavailable
- S15E7They Came from The Pleiadesunavailable
- S15E8The Immortality Machineunavailable
- S15E9The Shapeshiftersunavailable
- S15E10The Mystery of Skinwalker Ranchunavailable
- S15E11The Ultimate Guide to UFOsunavailable
- S15E12Aliens and the Presidentsunavailable
- S16E1The Divine Numberunavailable
- S16E2The Lost Kingdomunavailable
- S16E3The Galactic Keyholeunavailable
- S16E4Giants of the Mediterraneanunavailable
- S16E5The Forbidden Bibleunavailable
- S16E6William Shatner Meets Ancient Aliensunavailable
- S16E7Impossible Artifactsunavailable
- S16E8The Space Travelersunavailable
- S16E9The UFO Pioneersunavailable
- S16E10The Harmonic Codeunavailable
- S17E1The Lost City of Peruunavailable
- S17E2Top Ten Mysterious Sitesunavailable
- S17E3Top Ten Alien Cover-Upsunavailable
- S17E4The Mystery of Mount Shastaunavailable
- S17E5The Human Experimentunavailable
- S17E6Top Ten Alien Encountersunavailable
- S17E7Top Ten Alien Artifactsunavailable
- S18E1The Disclosure Eventunavailable
- S18E2Mystery of the Standing Stonesunavailable
- S18E3Beneath the Sacred Templesunavailable
- S18E4The World on Alertunavailable
- S18E5Recovering the Ark of the Covenantunavailable
- S18E6Secrets of the Star Ancestorsunavailable
- S18E7Alien Air Forceunavailable
- S18E8The Shadow Peopleunavailable
- S18E9Decoding the Dragon Godsunavailable
- S18E10The Time Bendersunavailable
- S18E11Ancient Aliens on Location: Incredible Structuresunavailable
- S18E12Ancient Aliens on Location: Extraordinary Encountersunavailable
- S18E13Ancient Aliens on Location: Decoding the Alien Glyphsunavailable
- S18E14Ancient Aliens On Location: The UFO Investigationsunavailable
- S18E15Ancient Aliens On Location: Mysterious Artifactsunavailable
- S18E16Ancient Aliens on Location: Evidence of Alien Lifeunavailable
- S18E17The Shining Onesunavailable
- S18E18The Journey to Immortalityunavailable
- S18E19Secrets of Inner Earthunavailable
- S18E20Return of the Egyptian Godsunavailable
- S19E1The Hotspot Connectionunavailable
- S19E2The Crop Circle Codeunavailable
- S19E3Mystery of the Lost Civilizationunavailable
- S19E4The Power of the Obelisksunavailable
- S19E5The MUFON Filesunavailable
- S19E6Cosmic Impactsunavailable
- S19E7Close Encounters of the Fifth Kindunavailable
- S19E8The Mysteries of Alaskaunavailable
- S19E9Aliens in Our Airspaceunavailable
- S19E10The Giants of Maltaunavailable
- S19E11The Top Ten Pyramid Sitesunavailable
- S19E12The Top Ten Mysterious Devicesunavailable
- S19E13The Top Ten Mysterious Islandsunavailable
- S19E14The Top Ten Alien Craftunavailable
- S19E15Edgar Cayce: The Sleeping Prophetunavailable
- S19E16The Gods of Greeceunavailable
- S19E17The New UFO Huntersunavailable
- S19E18The Power of the Talismanunavailable
- S19E19The Top Ten Mysteries of the Deepunavailable
- S19E20The Top Ten Alien Petroglyphsunavailable
- S20E1The Top Ten Alien Influencersunavailable
- S20E2The Top Ten Extraordinary Creaturesunavailable
- S20E3The Top Ten Hidden Alien Basesunavailable
- S20E4The Top Ten Scariest Encountersunavailable
- S20E5The Top Ten Alien Codesunavailable
- S20E6The Top Ten Alien Disastersunavailable
- S20E7Secrets of the Sumeriansunavailable
- S20E8The UFO Superhighwayunavailable
- S20E9Mysteries of Scotlandunavailable
- S20E10Mystery of the Stone Spheresunavailable
- S20E11Mysteries of the Mayaunavailable
- S20E12Unlocking the Stargatesunavailable
- S20E13The Whistleblowersunavailable
- S20E14The Search for Extraterrestrial Intelligenceunavailable
- S20E15Jacques Vallée: UFO Pioneerunavailable
- S20E16The Teachersunavailable
- S20E17Egypt's Giant Tombsunavailable
- S20E18The Linda Moulton Howe Filesunavailable
- S20E19The Chosenunavailable
- S20E20Resurrecting Puma Punkuunavailable
- S21E1The Top Ten Extraordinary Discoveriesunavailable
- S21E2The Top Ten Mysterious Monolithsunavailable
- S21E3The Top Ten UFO Crashesunavailable
- S21E4The Top Ten Unexplained Technologiesunavailable
- S21E5The Top Ten Secret Projectsunavailable
- S21E6The Top Ten Mysterious Mountainsunavailable
- S21E7Mysteries of the Aztecsunavailable
- S21E8The Glowing Orb Phenomenonunavailable
- S21E9The Legacy of J. Allen Hynekunavailable
- S21E10The Volcano Factorunavailable
- S21E11The Birdman Mysteryunavailable
- S21E12The Abduction Filesunavailable
- S21E13The Giantsunavailable
- S21E14Aliens in Our Midstunavailable
- S21E15Britain's UFO Filesunavailable
- S21E16Mysteries of the Norse Godsunavailable
- S21E17Secrets of Japanunavailable
- S22E1Skulls of the Godsunavailable
- S22E2Egypt's Lost Pyramidsunavailable
- S22E3Island of the Godsunavailable
- S22E4Extraterrestrial Engineeringunavailable
- S22E5UFO Hot Spotsunavailable
- S22E6Mysterious Monumentsunavailable
- S22E7Underwater Alien Basesunavailable
- S22E8Secrets of the Vedasunavailable
- S22E9Wars of the Godsunavailable
- S22E10UFO Sightingsunavailable
- S22E11Alien A.I.unavailable
- S22E12Hidden Messagesunavailable
- S22E13Secrets of the Amazonunavailable
- S22E14Alien Investigatorsunavailable
- S22E15Africa's Extraterrestrial Contactunavailable