Draco buys Hermione as his slave, confident he can make her reveal Potter's hideout in two weeks. But it is only the start of a carnal lust that burns by candlelight, and top-secret to all the deatheaters.
No time travel. Dumbeldore drafts Hermione in, to take Tom Riddle down.
A mystery that grows deeper when Malfoy is released from Azkaban, and starts to imitate a dementor. Rated M for coarse lang/sexual scenes/and 100K to get through.