A metal ladder led to a maintenance door in the ceiling. She scaled and lifted the hatch an inch. The corridor that greeted her looked like the inside of a submarine designed for three-foot-tall people; packed full of pipes and cables, it shimmered with heat. Alice nodded down at Red, put a finger to her lips, and beckoned for him to follow. As he started up, she slipped through and squatted in the stale heat.