Part 3 of The Arithmancer Series. Hermione won the war, but her career as the world's greatest arithmancer is just beginning. Now, she has places to go, spells to invent, and a family to start. Oh, and a whole lot of dementors to kill.

Sequel to The Arithmancer. Years 5-7. Armed with a N.E.W.T. in Arithmancy after Voldemort's return, Hermione takes spellcrafting to new heights and must push the bounds of magic itself to help Harry defeat his enemy once and for all.