C.S. Lewis wrote the Narnia books for children. He also wrote a "space fiction" trilogy, which, like early Doctor Who involved ordinary people visiting alien planets. Many commenters have compared the TARDIS to the magical wardrobe in Lewis' The Lion, the Witch and the Wardrobe, the first-written of the Narnia books. The Doctor Who story The Doctor, the Widow and the Wardrobe borrows the form of its title, some visual imagery and plot elements from The Lion, the Witch and the Wardrobe.