Which C.S. Lewis novel follows the boy Digory Kirke and tells how Narnia was created?

The Magician’s Nephew follows Digory Kirke and tells how Narnia was created.

Published in 1955, the novel is the sixth Narnia book in publication order but is usually numbered first in the series’ internal chronology. Digory and Polly Plummer travel between worlds using magical rings made by Digory’s uncle, Andrew Ketterley. Their journey brings them to the dying world of Charn and later to the creation of Narnia.

The book introduces several elements that recur elsewhere in the series, including the wardrobe’s origin, the lamppost in Narnia, and the beginnings of the White Witch’s connection to that world. Aslan creates Narnia by singing life into existence and appoints Digory to help resolve the consequences of his actions.

The title’s “magician” is Uncle Andrew, not Digory. That distinction matters because Digory is the child protagonist, while Andrew is the adult whose experiments trigger the dangerous travel between worlds.