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I was excited to read this book because I have seen it all over the place and I wasn't disappointed. The main character, Christopher, is an apothecary's apprentice. Unfortunately, apothecaries all over the city are being murdered and it isn't long before Christopher's beloved master is the next victim.
Using the puzzles and clues that his master left behind, Christopher, along with his friend Tom, must find out who is behind the horrible murders and decide whether he wants to share the power that lies behind his master's hidden discovery.
I would recommend this book to Grade 5-7. It is a quite violent in the last couple of chapters but the overall story, character development, etc. is GREAT! As an added bonus, Kevin Sands is a Canadian author so I am hoping this one will be on Silver Birch or Red Maple next year!