Leonardo is weary. The tremor in his hand inhibits his ability to paint. His eyesight is failing. The ravages of age depress him.What better way to learn from history than with a good story based in fact. Mr. Herman has done extensive research not only into the history of the Renaissance but he has created an in-depth portrait of Leonardo da Vinci, the man and the artist, throughout this series. The light is dimming on this extraordinary life and we are witness. Leonardo is going through a dark night of soul! He is obsessed with accomplishing all he can in his few remaining years. Now the threat of violence forces him to leave his home in Florence to take up residence in Milan. The new Pope, Julius II is not popular. His enemies are legion and they conspire in secrecy with a deadly poison. Suspects are tortured and executed. The investigation is narrowing and the conspirators are getting nervous. They need to deflect suspicion. Leonardo is a convenient candidate... He is known to work with poisons in his workshop. So, it is with great weariness and a heavy heart that he turns his attention to clearing his name by searching for the source of the poison. He discovers the ingredients in an ancient text and this leads him to expose an old enemy. Once again the mystery is solved and once again Leonardo is in need of sanctuary from those looking to destroy him. Italy has become too dangerous for him but where can he go to find peace in his final years. Another thrilling adventure with insight into the humanity and vulnerability of a genius. Enjoy this second to last book in a series based on the life of Leonardo.