Suggested by ucftracy.
Elisa Lam was a 21-year-old Canadian college student whose body was found in a water tank on the roof of the Cecil Hotel in LA in 2013 after guests complained that their water was oddly coloured and had a weird smell. Her body was found naked, but her clothes and possessions were floating alongside it, and coroners found no evidence to suggest she had been physically assaulted or that she had committed suicide.
The creepiest part, though, is definitely the surveillance footage released by the police of Lam in an elevator at the Cecil Hotel on the day of her disappearance. It may just be the creepy mindset, but her behaviour in the video is seriously unsettling – and it's said to have been Ryan Murphy's inspiration for AHS: Hotel.
5. H.H. Holmes
Suggested by tammyclementso.
Dr Henry Howard Holmes is said to have been one of the first documented serial killers. He ran a hotel – now called the "Murder Castle" – in Chicago in the late 19th century. Oh, and he designed it himself, specifically with the intention of murdering people. That's some creepy shit. He confessed to 27 murders in total, but investigators believe that the real body count may be as many as 200. His Wiki page details all the different methods he used to kill, and it's seriously some Saw-level stuff.
Suggested by dsw62.
The Somerton Man mystery – also known as the Tamam Shud case – is considered to be one of the most mysterious mysteries to ever mystery in Australia. In 1948, the body of an unidentified man was found on a beach in Adelaide. It's creepy because, even after all these years, the man has never been identified, but he left behind a whole bunch of unexplainable clues, like a weird, undecipherable code and the torn piece of paper found on his body that simply read "tamám shud" – Persian for "ended" or "finished". Creepy.
Suggested by danahodges.
Again, this article isn't creepy in itself – but it'll DEFINITELY keep you up all night. Here are hundreds (probably, I haven't counted) of mysterious disappearances to read about all in one convenient location. Some of them are cool historical figures, like Theodosia Burr, daughter of US Vice President Aaron Burr, who was lost at sea. Then there was Percy Fawcett, a British archaeologist and explorer who disappeared on his mission to find El Dorado. Whoever you decide to read about first, there's no doubt it'll end in an hours-long wikihole. So, have fun!