He can't leave the room. Her room. And it's all the Order's fault. Confined to a small space with only the Mudblood for company, something's going to give. Maybe his sanity. Maybe not. "There," she spat. "Now your Blood's filthy too!" DM/HG. PostHBP.

Sirius Black remained the Secret Keeper and everything he feared came to pass. Ten years later, James and Lily live, Harry attends Hogwarts, and Voldemort remains…yet the world is different and nothing is as it seems. AU, updated for HBP.