FALLEN PRINCE → Prisoner of Azkaban

At an early age, Keane Pettigrew learned his father died, fighting for a noble cause, killed by a madman and former friend, Sirius Black. Keane is left in the care of his grandmother after his mother dies tragically during childbirth. However, after a rough start, Keane lives a rather charmed life, growing up in the town of Fowey, where he spends his summers sailing, fishing, and of course, helping his grandmother tend to her garden.

When Keane starts his first year at Hogwarts, he becomes friends with Harry Potter, Hermione Granger, and Ron Weasley after being sorted into the Gryffindor house. Just like his father. Over the course of a couple of school years, Keane finds himself tagging along on a rather wild adventure. However, the party comes to an end when Keane learns that Sirius Black has escaped Azkaban. Not only is Sirius responsible for the death of his father, but for the death of Harry's parents as well.

Hogwarts is on high alert, an old friend of his father arrives to teach, dementors surround the castle on a daily basis, and Keane believes that Sirius is coming for him to finish what he started twelve years ago.

And it's only his third year.