The Time-Travelling Cat and the Tudor Treasure

Ka, the time-travelling cat, has disappeared again and left Topher just one clue. Following it, Topher finds himself in the Elizabethan court and apprenticed to the royal astronomer and magician, Dr Dee. But where is Ka? And how is her fate bound to Dr Dee’s fascination with the Philosopher’s Stone??Can Topher solve the mystery and save Ka before it’s tool late?