The Chameleon Wore Chartreuse Book

At first glance, I thought this book was going to be pretty decent, but boy was I wrong! I actually kinda liked it. This book starts off with a fourth grade, private eye, Chet Gecko. A girl comes up to him and tells him that his brother is missing. But when Chet tells the girl that she needs to pay a fee, she says she doesn't have any money. So, instead, she promises him that he'll get pie, (stinkbug pie) if he finds him at the end of the day and suddenly he has a case to solve. Read this book to find out if Chet can find her missing brother. I think this book would be great for 2 and 3rd graders.