Still blinded, Polly felt for the gate and opened it, trying not to make any noise. She went out into the nave and stood for a minute, waiting for her eyes to recover. When they did, she could just discern the shadowy outlines of the arches, the bricked-up Wellington Monument across the nave, and the choir, and she thought her eyes must finally have adjusted to the darkness. But when she glanced up behind her she saw the windows were lit with yellow.

Fire, she thought, guiltily grateful for the light. There was just enough for her to find her way and not crash into the tin baths full of water sitting at the base of the massive pillars or into the stirrup pumps propped against them.

They’ll need all of those tonight, she thought, hurrying along the south aisle, past The Light of the World, though nothing of the painting but the lantern was visible in the near darkness. It glowed dimly golden, though the light from the windows seemed to be growing steadily brighter and oranger and to be coming from the north transept as well.

Out here in the aisle she could hear the drone of the planes, punctuated by the thud of the anti-aircraft guns. Another batch of incendiaries clattered onto the roofs as she passed the ranked rows of wooden chairs, so loud she looked up, expecting them to clatter onto the marble floor in front of her, but there were no more running footsteps. The fire watch must all be up on the roofs already.

A door banged heavily at the end of the cathedral she’d just come from, and this time it was definitely an outside door. Polly looked wildly about for a place to hide, then ducked behind the nearest pillar and flattened herself against it, listening. Whoever it was was running this way, straight down the middle of the nave, his footsteps ringing on the marble floor.

Polly inched her way around the pillar to get a look at him. If it was a member of the fire watch, she could ask him to take her to Mr. Bartholomew. There wasn’t enough light to see him clearly, but she could see that he was wearing an overcoat. It flapped about his legs as he ran. It’s Mike, she thought.

No, it wasn’t him. He wasn’t limping. Someone looking for shelter? People had taken shelter in the Crypt, hadn’t they? But whoever this was knew exactly where he was going. He ran between the rows of wooden folding chairs set up for evensong and toward the dome.

He had to be one of the fire watch. She ran out from behind the pillar, but he was already across the wide floor under the dome. “Wait!” Polly called. “Sir!” She ran after him, but he’d already vanished into the shadows.

A door slammed. Where? Had he gone into the south choir aisle or into the transept? She darted down the near side of the transept and then around to the other side, looking for a door. The stairs up to the Whispering Gallery were along here somewhere, but she didn’t know if they led on up to the roofs.