 Lewis had originally intended only to write the one Narnia novel, "The Lion, the Witch and the Wardrobe".However, when Roger Lancelyn Green asked him how a lamp-post came to be standing in the midst of Narnian woodland, Lewis was intrigued enough by the question to attempt to find an answer by writing "The Magician's Nephew", which features a younger version of Professor Kirke from the first novel.