Ka the time-travelling cat has disappeared again, and Topher knows that she is in terrible danger. For Ka has gone to Tudor England, a time when cats were tortured. Topher must try to find her, and in doing so, meets up with Doctor Dee - magician and astronomer to Queen Elizabeth I. But Doctor Dee is searching for something far more important than a cat. He must satisfy the Queen by finding the elusive Philosopher's Stone...Another amazing adventure with Ka and Topher from Julia Jarman. Download and start listening now!