While reading the summary I was thinking this book was about a little girl poisoning people around her. Unfortunately after 10 pages it is all about the murder and the girl getting involved in solving it. Playing a little detective. Though I do love detectives this was not what I was expecting from this book. The only story about poisoning her sisters is small references to her putting something in her sisters lipstick which is coming back about 4 times in the book in 10 lines in total. As detective it was not a very strong story either. It was pretty much predictable and there where some minor mistakes in the story. If you can borrow it from someone and you like detectives it is worth giving it a try, but I would not spend money on getting it.