The battle of Hogwarts was lost. Wizarding Britain has fallen to the most powerful Dark Lord that has ever lived. Harry is broken and missing, Hermione is trapped. All is lost. Or is it? When a stranger reunites them and reveals the truth and the lies, they will be faced with a choice. Allow the world to burn, or return to the past? Revenge is sweet. (Gray Harmony, Time Travel)

Harry Potter's failure at the Department of Mysteries and the death of Sirius black has left him broken and beyond repair. In his grief, he is haunted by a monstrous voice within him offering him the power to protect others. But at what cost? Dark Harmony non horcrux possession fic, Weasley bashing and manipulative but not evil Dumbledore. Rated M for a reason.