Mary Poppins Opens the Door Mary Poppins Opens the Door Mary Poppins Opens the Door is a British children's fantasy novel by the Australian-British writer P.L. Travers, the third book and last novel in the "Mary Poppins" series that features the magical English nanny Mary Poppins. It was published in 1943 by Harcourt, Brace & World, Inc and illustrated by Mary Shepard and Agnes Sims. On Guy Fawkes Night, Mary Poppins arrives in the wake of the last fireworks display by the Banks family. The Banks children Michael, Jane, the twins, and Annabel plead with her to stay. She reluctantly agrees to do so "till
Mary Poppins daughters and two sons. As in "Mary Poppins", Mary leaves at the end (via an enchanted merry-go-round), but this time with a "return ticket, just in case" she needs to return. When Mary last left the Banks children in Cherry Tree Lane, she took a "return ticket, just in case." In the third book, she returns to the park in front of Cherry Tree Lane the way she came, falling with fireworks. Once again she takes up nanny duties in the Banks household and leads Jane, Michael, the toddler twins John and Barbara (as well as the new baby girl