In the past year or so, three internet mysteries popped up that really got my attention. They may seem very different, but trust me, they're connected. The first one is about a girl who found a door in the basement of her AirBnB. She opened it and inside was an abandoned shopping mall. The second story is about Javier aka Unico Sobreviviente, who woke up in a hospital in the year 2027, in an alternate universe. In his version of the future -- everyone on earth has vanished. He's the only one left, and he has video to prove it. The third mystery is known as the Backdoors. A reality adjacent to ours that, if the conditions are just right, you can accidentally slip into.