Have you ever had an imaginary friend? I did when I was a kid and his name was Greg. But here's the thing, I'm pretty sure he was just a figment of my imagination. Or at least that's what I used to think until recently. Now, Greg is my next-door neighbor and things have been weird ever since. Our friendship is over now, and he wasn't not too happy about it. In fact, I'm pretty sure that he's seeking revenge. I mean, can an imaginary friend really harm someone? I hope not, but I can't shake the feeling that my life is in danger!