It's definitely not the first one I read, but the first one that comes to mind is Cam Jansen and the Mystery of the Babe Ruth Baseball. For those of you unfamiliar with the amazingness that is the Cam Jansen series, Cam is a lovely girl with a photographic memory. She is literally a human camera. She looks at something, says "click," and her mind takes pictures of what's going on around her. Then she goes through these mental images to solve awesome crimes. Yes, I used to walk around and try to do this. I failed.