Conspiracies, intrigue, danger – the Da Vinci Code for readers aged 11 and up. "Don't tell anyone." Until this mysterious warning, Christopher Rowe was quite content with his life as an apprentice to the master apothecary and alchemist Benedict Blackthorn. He had a roof over his head, and his master taught him not only how to create remedies for warts but also how to crack coded messages and solve puzzles. However, everything changes when a series of mysterious murders plagues London. Almost always, it is alchemists who are killed. Christopher senses that his master is in danger. He has little time left to unmask the murderers and uncover a secret so powerful that it could destroy the world.