The Poster Boy

Hermione is a Healer, the best in the world, and she's called onto a case by her best friend Harry Potter. During the war, near the end, Voldemort Destroyed the Dementors to gain back his most loyal subjects. The effects of the souls returning was devastating, but one of his followers fared better than the others. Barty Crouch Jr. (BCJ/Hermione in later chapters.)