These mysteries from the past two and a half decades will freak you out! Welcome to WatchMojo, and today we’re counting down our picks for thirty 21st-century mysteries so weird, so creepy that they may just keep you up at night. Our countdown of the creepiest mysteries of the century so far includes The Mysterious Shrieks of Forest Grove, The Murder of Hae Min Lee, The Disappearance of Lars Mittank, Arkansas Bird Deaths, Disappearance of Madeleine McCann, and more! Did an entry that should be on this list mysteriously go missing? Let us know in the comments below!

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#Unexplained
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#Disturbing