The Cabinet of Wonders Petra Kronos has a simple, happy life. But it's never been ordinary. She has a pet tin spider named Astrophil who likes to hide in her snarled hair and give her advice. Her best friend can trap lightning inside a glass sphere. Petra also has a father in faraway Prague who is able to move metal with his mind. He has been commissioned by the prince of Bohemia to build the world's finest astronomical... Full description