Mary Poppins flies in on a rocket (firecracker) on Guy Fawkes Day. The usual wonderful adventures ensue, with Mary being tart, sarcastic, and dictatorial - nothing at all like Julie Andrews!! We have encounters with Peppermint Horses, a Cat that looks at the King, and a statue named Neleus, among others. When the "Other Door" opens and she leaves, she is seen off by many of the series characters not only from this book, but from the previous ones. We are left with the feeling this might really be the real end.