James Potter and the Curse of the Gatekeeper

James Potter and the Curse of the Gatekeeper is a self-published online novel written by American computer animator George Norman Lippert in 2007. It is a fanonical continuation of J. K. Rowling's Harry Potter book series, and is a sequel to Lippert's first book, James Potter and the Hall of Elders' Crossing. Written as a fan fiction project for Lippert's wife and sons, the novel is set nineteen years after the end of the last official instalment in the series, Harry Potter and the Deathly Hallows, and describes the adventures of Harry Potter's eldest son, James Potter II, during his second year at Hogwarts School of Witchcraft and Wizardry. Lippert has written four books in the series, and plans to make it a five-book series.

Plot
James Potter II goea to his second year at Hogwarts, now joined by Albus, Scorpius Malfoy, and Rose Weasley. As the year passes, he uncovers the secret of the Gatekeeper's descent to Earth and questions Merlin's good-will, while also facing the secret of Voldemort's bloodline.

Reception
The novel was as acclaimed as the first, gaining more than 40,000 readers at launch.