The Chronicles of Narnia she felt were upsetting to children. Poskanzer also noted Lewis presented his Christian message subtly enough as to avoid boring children with overt sermonizing. Examples include: Philip Pullman's fantasy series, "His Dark Materials", is seen as a response to "The Chronicles". Pullman is a self-described atheist who wholly rejects the spiritual themes that permeate "The Chronicles", yet his series nonetheless addresses many of the same issues and introduces some similar character types, including talking animals. In another parallel, the first books in each series – Pullman's "Northern Lights" and "The Lion, the Witch, and the Wardrobe" – both open with
The Chronicles of Narnia lion, save Narnia from the evil White Witch, who has reigned over the land of Narnia for a century of perpetual winter with no Christmas. The children become kings and queens of this new-found land and establish the Golden Age of Narnia, leaving a legacy to be rediscovered in later books. Completed after Christmas 1949 and published on 15 October 1951, "Prince Caspian: The Return to Narnia" tells the story of the Pevensie children's second trip to Narnia. They are drawn back by the power of Susan's horn, blown by Prince Caspian to summon help in his hour of need.