The book,The Blackthorn Key, by Kevin Sands is a novel that requires the reader to think and understand how the character is going to solve the mystery. The main character, Christopher was an apothecary’s apprentice in London, he was fascinated with solving complex codes, puzzles, and creating powerful medicines. If you like reading suspense novels, this will be a great choice for you because the book is full of mysteries and excitements that you cannot imagine. While reading this book, I would wanted to be part of the story and experience the adventures that the characters have gone through. Although I cannot solve puzzles or codes like Christopher did, but if I could be him, I would enjoy solving complex codes and puzzles. It would be fun.