James Potter and the Crimson Thread (James Potter Series, book 5)

Two years after the debacle of the Morrigan Web, James Potter returns to Hogwarts for his final year.

With the Vow of Secrecy crumbling in every corner, the Magical world prepares for its imminent collapse into Muggle reality, whether they are ready for such a revelation or not.

James, along with his longtime companions Ralph Deedle, Zane Walker, and Rose Weasley, are drawn into a secret plot by none other than Petra Morganstern herself to assume the role of the Crimson Thread in its original, doomed dimension, thus resetting our own. But can James allow Petra, his long unrequited love, to leave his reality forever, no matter the cost?