Paracelsus

No, it's not one of Lockhart's books. It's a confrontation during Harry's sixth year. He has to deal with not just monsters, but with the unlikeliest of allies: Millicent Bulstrode! This one-shot is backstory to my novel-length Restitution.

After four centuries of captivity, she was free... and she's looking for the power to let her stay free. But not if the female staff of Hogwarts has anything to say about it! This story's set in Harry's sixth year, in the same universe as Restitution.

Heliopaths are a myth. Everyone (except Luna) knows

Restitution. It can mean restoring things to their original state. Repayment of a debt. Redemption for sins. Revenge for injuries. After defeating Voldemort and resuming his life, Harry must offer restitution in all these ways. This sequel to And Miles to Go Before I Sleep is set four years post-Hogwarts.

"How is it that you - a skinny boy with no extraordinary magical talent - managed to defeat the greatest wizard of all time?" (CoS) Through careful advance preparation, that's how... and by deceiving those he loved. This prequel to "And Miles to Go Before I Sleep" is set four years post-Hogwarts.

Voldemort threatens more than England, he threatens the entire wizarding world. So his defeat should have world-wide repercussions, yes? On the far side of the globe, a doctor has to treat a very unusual patient (she doesn't recognize him, but you'd better), and nurse him back to health against his will. Set post-Hogwarts.