Ever heard of anything strange or supernatural? I tend to be skeptical of these things, but I have heard one story I find it hard not to believe.
My high school psychology teacher once told my class about certain dreams she used to have. She would have a dream where someone she knew died, and then shortly afterward, that same person actually did die in real life. It happened many times, for years even, and the dreams always came true. It got to the point where people were telling her, "If you see someone I know die in one of your dreams, don't tell me." After a while, though, the dreams stopped and she hasn't had one of them since.
I wouldn't believe this story coming from just anyone, but I know that she's not the kind of person who would make up a story like that. She even said herself that she's skeptical about that kind of thing.
Of course I don't believe in the supernatural, but I don't see how it could be a coincidence. I think it could just be something we don't have any kind of scientific explanation for at this point, something we don't know about yet.