During the battle for Hogwarts, Hermione accepts to do the Unbreakable Vow with Bellatrix to protect the people she loves. But binding herself to the dark witch has more consequences than she could ever have anticipated. Cover art by batlesbo/Chloé C.

In a world where Voldemort never existed, Bellatrix Black is a cynical and dour detective working for the Department of Magical Law Enforcement, subdivision Magical Homicides. When she is tasked to solve a murder at Hogwarts, a certain resident genius called Hermione Granger happens to be her prime suspect. AU, Bellamione, liberal amounts of fluff.