As soon as she shut the considerable door, the lock seemed to re-engage itself, and by the time she’d turned around, their guidespony had already opened the other door, pulling the heavy hatch inwards. There was light beyond it, so much more than even in the little metal antechamber, that Isabelle was blinded by the brightness. Without waiting for her -- so much for sending in his bodyguard first! -- Bitsmount stepped into the light. 