Lucy has become a firm fixture in the household of Dr Dee, a real-life figure who was court magician to Queen Elizabeth 1. Lucy, in return for saving the queen's life, has been told that she is to work as a spy for Her Grace and that she is to remain with the Dee family and await further instruction ... And then Lucy hears unexplained cries in the Dee house, and finds a young girl imprisoned there. What is Dr Dee doing? Lucy means to find out.