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.

Hermione/Bellatrix pairing. Bellatrix abducts Hermione and keeps her prisoner, but an ancient magic threatens to change both their lives in ways they never thought were possible.