Jim ignores him--he's always found that's the thing the brilliant can least stand, is being ignored. He hates it himself, Sherlock ignoring his game for tea and jumpers and a stupid, ordinary doctor.

He presses a button in his pocket, and two thugs come in, going to undo John's chains and walk him out of the room, locking the door behind them and leaving Sherlock once again in the darkness.

Jim's quite proud of his layout. The doors are just set up so that one can just barely hear screams from the interrogation room if they're very, very loud.

It takes about twenty minutes before they're audible.