Which Doctor appeared in "The Celestial Toymaker"?In the episode "The Hungry Earth" it opens with a story being read to a little boy. What is the name of the story?The Fourth Doctor had the longest run of any of the Doctors (in one hundred seventy-two episodes). Who played Doctor Who for nearly seven years?Amaze your friends and family with all things related to the Doctor Who tv series. If you know your tv series, there are 650+ questions sure to riddle even the most die hard fan! Ready to take the challenge? Doctor Who Trivia Quiz Book today!