There's a bomb, then? The tube carriage is carrying a bomb.Must be. - Right.What are you doing? - I'm calling the police. - What? No!Sherlock, this isn't a game, they need to evacuate Parliament.They'll get in the way, they always do.This is cleaner, more efficient.And illegal? - A bit.What are you doing?Coming.I don't understand. - Well, that's a first.There's nowhere else it could be.