This is a little like the Joker/Harley theme, but not really. Bellatrix is obviously the infamous criminal and Hermione is the young and naive soul healer. It takes place in Azkaban where Bellatrix is locked up.

A simple name change and the flick of a wand can place Satan himself in the midst of angels. Or should I say Satan herself? The Second War will not be fought between He Who Shall Not Be Named and the Boy Who Lived, but rather the Leader of the Light and the Girl He Should Have Killed.

In a world where it is known from birth whether or not an individual is an Alpha, Beta or Omega,  from the new-borns scent alone and muggles view Omega's as little more than slaves and the 'light' are in support of this belief, Hermione finds herself subjected to a childhood of cruelty at the hands of her adoptive parents. Full summary Inside Bellamione

Bellamione. Hermione is sent back in time, not as an accident, but because there is something she has to do. Some new friends, some old fiends to meet, a new perspective that changes so much. And a certain Dark Witch that has almost as many secrets as herself, getting to know each other in the strangest of situations.

Sometimes things don't go the way they're supposed to, and sometimes people don't listen to reason. Hermione knows better than to trust in the Ministry, even if she works for them, so she takes it upon herself to make things right. By sponsoring Draco Malfoy, which sets in motion a chain of events that leads to saving one of the most notorious witches alive. Bellatrix Lestrange.

This is a story of unconditional love, hardship and war. The only hope for Hermione and all those she loves is her very own prophecy. In which lies the secrets to her past, the truth about her family and ultimately the hope for a brighter and more peaceful future for all those she loves. Full summary inside. (Hermione/Fleur/Nymphadora)

She should know better than to trust books that just fall into her lap, especially when it clearly holds ancient and dark secrets. The Order would never let her learn this information. That just means she won't tell them about it. She has a friend to guide her through the dark; the Order will no longer blind her with their self-righteousness. They never liked her anyway.

As a psychologist they tell you not to fall in love with your patients. And what does Hermione do? She falls for her most dangerous patient yet. Human AU

After the Battle of Hogwarts, Hermione turned her back on the Wizarding World. She is drawn back by an offer she can't refuse. Lucius Malfoy is again Lucius Malfoy. But he carries the invisible scars of war, which he can't see. Their paths are destined to cross. Story starts in 2 parts; the 2 worlds will collide. It will be a Hermione & Lucius story. Is rated M for adult content.

After finding Snape clinging to life on the floor of the Shrieking Shack, Hermione finds an unlikely friend, until one night their relationship shifts irrevocably. Seven years later, they run into each other and fall back into old patterns, beginning something that neither of them had ever anticipated. SS/HG - EWE - M for language and adult content.