R.L. Stine 
Beast [EPUB ebook] 

THRILL RIDE I mean, The Beast was one awesome ride! My cousin Ashley and I had never been on anything like it. And then we heard about the ghost that was supposed to ride it at night after the park closed. A ghost on a roller coaster? Yeah, sure. I didn’t believe it, of course. Then one night after the park closed, we found ourselves on The Beast. Was I shocked when it started to move! But that was just the beginning. Because, you see, we weren’t alone…and the guy with us wasn’t exactly human!