On January 19, 2013, Elisa Lam entered the elevator of the Cecil Hotel in Los Angeles. She was never seen alive again. Weeks later, police released the security camera footage. The world watched. The world had no explanation. Case Zero reconstructs, episode by episode, the real cases that remain unanswered.

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In November 1970, the body of a woman was found in Isdalen Valley, in Norway. She was partially burned, and no documents were found to identify her. Her belongings shared a peculiar trait: labels had been removed, objects had been altered, and traces had been erased. The investigation revealed that she had traveled across Europe using multiple identities and routes that were deliberately difficult to trace. Despite the efforts of authorities, her name was never confirmed. In this episode, Case Zero reconstructs the known facts and the lines of investigation surrounding one of Europe's most persistent mysteries — a story that, more than fifty years later, remains unsolved.

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In 1959, nine hikers died under inexplicable circumstances in the Ural Mountains of the Soviet Union. Their tent was found cut open from the inside. Some had fled into extreme cold without adequate clothing. Others displayed injuries that were difficult to explain. The official investigation closed the case without a conclusive answer. Decades later, it remains one of the most analyzed mysteries of the twentieth century.

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In 2008, Brandon Swanson called his parents in the middle of the night after his car went off the road in a rural area of Minnesota. He was walking and talking to them by phone, trying to get his bearings. Then, without warning, he said a single word: "oh, shit." The call went dead. He was never heard from again. Despite extensive search efforts, his whereabouts remain unknown.

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In 1587, more than a hundred English settlers established a colony on Roanoke Island, in what is now the United States. Three years later, when a supply expedition returned, there was no one left. No bodies. No signs of struggle. Only a single word carved into a wooden post: "CROATOAN." The fate of the Lost Colony of Roanoke has remained one of the oldest and most puzzling mysteries in American history ever since.

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On March 8, 2014, Malaysia Airlines Flight MH370 vanished from radar with 239 people on board. There was no distress call. There was no immediate explanation. In the days that followed, the search expanded across thousands of miles, while contradictory data emerged about the aircraft's trajectory. Despite one of the largest search operations in history, the plane was never fully recovered. What happened in those final hours remains unknown.

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In 2006, Rey Rivera disappeared in Baltimore. Days later, his body was found inside a hotel — in an abandoned conference room he appeared to have fallen through from a considerable height. The room was locked. There were no witnesses. The trajectory of the fall did not quite fit the scene. Police classified the death as unexplained. Years later, the case continues to raise questions about what really happened in his final hours.

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In 1997, underwater sensors operated by NOAA detected an extraordinarily powerful sound in the Pacific Ocean. It was picked up thousands of miles away. Its origin was never definitively identified. Some scientists proposed a natural explanation. Others considered possibilities that remained inconclusive. The recording, known as "The Bloop," remains one of the strangest sounds ever captured beneath the ocean's surface.

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