Change-up: Mystery at the World Series was a great book. In another Stevie and Susan Carol adventure, the two are found at the World Series. One night after the Nationals had just won to go to the series, Stevie sees a lonely looking pitcher named Norbert Doyle. Stevie tries interviewing him but Doyle gets called away by teammates as they are celebrating. Doyle then calls Stevie later and accepts an interview. During the interview Stevie learns that Doyle had been in a terrible car accident that had traumatized him for quite some time. As Stevie and Susan Carol investigate, they stumble into a lot of drama. Stevie thinks that Susan Carol is cheating on him with Doyle's son and Susan Carol tells him that she can't give Stevie any information that the son has told her. As Stevie goes to investigate the car accident, he is chased by dogs, beat up, and threatened. This book is filled with mystery and suspense. It is a great read for anyone that likes sports any anyone that likes to wonder what is going to happen next. I give this book a solid two thumbs up!