We’ve all heard ghost stories about creepy things happening to “a friend of a friend” or a distant relative in another city. But what about the stories that are more than just urban legends or anecdotal accounts? What about the stories reported on by reputable sources? Those that make national headlines and involve one or more credible witnesses? Believe it or not, stories like these do exist. And they’re more common than you might think. With than in mind, here are seven paranormal mysteries that will give you chills.