Underworld

Harry and Hermione are Aurors at the top of their game. Draco Malfoy is the leader of the remaining uncaptured Death Eaters that hide in the untouchable criminal underbelly of London. When a terrible crime is committed, their worlds collide, forcing Hermione to revisit her buried history with Draco Malfoy. (Dramione, kidnapping/imprisonment, inspiration: Hades x Persephone)