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“This is one of the most disturbing unsolved cases in America… In 2013, a 21-year-old student named Elisa Lam checked into the Cecil Hotel in Los Angeles. She was traveling alone… and staying on the 4th floor. The last time she was seen alive… was inside an elevator. The CCTV footage shows something extremely strange… She presses multiple buttons… steps out… looks around… as if someone is following her… Then she starts hiding in the corners of the elevator… acting terrified… Moments later.......