will investigate a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Each program within the franchise will showcase fresh, new evidence and perspectives including never-before-released documents to the general public, personal diaries and DNA evidence to unearth brand-new information about these infamous and enigmatic chapters in history.

타이타닉호 침몰을 조사했던 빅함 자작의 서류함이 드디어 공개된다. 스미스 선장이 빙산이 있다는 경고를 수차례 받았음에도 속도를 줄이지 않았던 것, 빙산 충돌 후에도 다시 배를 출발시켰던 것, 구명보트에 사람을 최대로 태우지 않았던 것 등 숨겨진 비화가 드러난다. 생존자들의 증언을 바탕으로 더 큰 비극을 막을 수 없었는지에 관한 질문이 이어지고, 비극의 와중에도 후세에 어떤 교훈을 남길 수 있을지 짚어본다.

세기 전 영국의 탐험가 어니스트 섀클턴은 부푼 꿈을 품고 남극으로 탐험을 떠났지만 그가 탔던 배 엔듀어런스호는 강추위와 얼음을 견디지 못하고 침몰하고 만다. 그로부터 약 100년이 지난 현재, 각 분야의 전문가들이 모여 2년 여 동안 준비한 끝에 엔듀어런스호를 찾는 탐사에 나선다. 과연 탐사대는 남극의 차가운 바다를 헤치고 무사히 엔듀어런스호를 찾을 수 있을까?

He was the actor whose most famous role was assassinating a president. But was John Wilkes Booth also an escape artist? Did Booth evade justice and live for decades after killing Abraham Lincoln? For the first time, Booth family members share family lore, and what they believe is evidence of the assassin's escape, passed down through generations.

A cryptic journal sparks an unprecedented investigation into whether a UFO crashed at Roswell, NM in 1947. Major Jesse Marcel, the first government official on the scene, believed to his dying day that an extraterrestrial spaceship plummeted to earth and the U.S. government covered it up. Now, the Marcel family has come forward with a journal found among Marcel's possessions. The journal may contain coded-clues to the truth behind Roswell. Former CIA operative Ben Smith embarks on a new investigation that includes a cryptographic analysis of the journal, a high tech geological study of the crash site, and interviews with witnesses who have never spoken publicly. What really crashed in Roswell? The US government claimed it was a weather balloon and then changed its story. Others spoke of alien bodies, and extreme government intimidation.

Investigator Ben Smith travels to Jesse Marcel's hometown on Louisiana's Gulf Coast to speak with family members who reveal information that supports Marcel's story of a government coverup. Smith speaks with Leslie Kean, the investigative journalist who broke The New York Times story about a clandestine U.S. government program to investigate UFOs. Smith also digs deeper into the mystery of the journal as he studies writing samples to determine if the journal might have been written by one of Marcel's fellow officers who later claimed he was ordered to oversee the military's coverup. Back in Marcel's hometown, Smith meets with a man who swears Marcel confided in him about alien bodies-- something Marcel had never mentioned to the press or family. As the results come back from soil, metal and forensic handwriting analysis, Smith shares his findings with the Marcel grandchildren.