《外星人》
從一封神秘的電子郵件追查到加州沿岸一處巨大的水下飛碟基地。第51區的調查行動出現了危險轉折。
A mysterious email leads to what could be a huge underwater UFO base off the California coast; an investigation of new activity at Area 51 takes a dangerous turn.
《超自然現象》
專家試著找出可能是新墨西哥州「陶斯噪音」的第一次錄音紀錄,也前往奧克拉哈馬州調查當地的超自然現象。
Experts try to uncover what could be the first recording of New Mexico's 'Taos Hum' and probe paranormal activity in Oklahoma.
《遺失》
揭開80年代傳奇電動遊戲與中情局思想控制計劃MK-Ultra、消失在喬治亞州泰碧島海域的核彈三者之間的事實關聯。
The Unexplained hunts for the truth about a legendary 1980s arcade game linked to the CIA's mind control program, MK-Ultra and searches for a nuclear bomb lost off the coast of Georgia's Tybee Island.
《傳說》
甘迺迪總統身邊的秘密軍人說明當年有人試圖在芝加哥刺殺總統的案件。一位寶物獵人可能已經找到了亞利桑那州知名失落荷蘭人金礦的所在地。
A secret serviceman for President Kennedy sheds light on a plot to assassinate him on the streets of Chicago and a treasure hunter may have located Arizona's infamous Lost Dutchman Mine.
《控制》
本集節目跟著抓鬼獵人尋找天主教分支之一的驅魔教派,並追溯強大駭客集團無名氏(ANONYMOUS)的源頭。
The Unexplained rides-along with the demon-hunting advance man for a breakaway order of Catholic exorcists and seeks out the origins of powerful hacker group known as ANONYMOUS.