“Yes, miss.” Time in the Moors was not precisely like time in the world Jack and Jill had originally come from: it followed a different set of natural rules and did not map precisely to any other calendar. But a year was a year. Even if their precise birthday was impossible to mark, the date of their arrival was clear.

Jill tumbled out of bed in an avalanche of blankets and fluffy nightgown. “I was almost twelve and a half when we arrived here,” she said excitedly, starting to shovel her covers back onto the mattress. “That makes me practically eighteen. Does he want me? Tonight? Is it finally time?”

“Practically eighteen is not the same as actually eighteen, miss,” said Mary, fighting to keep the precise balance of kindness and deference she needed when speaking to Jill. “He knew you would ask about this. He said to tell you that because we do not know your precise birthday, he will err on the side of caution; things will continue as they are until the Drowned Abbey rings the bells for the change of seasons.”

“But that’s forever!” protested Jill. “Why so long? I’ve done nothing wrong! I’ve been so good! Everything he’s asked me to be, I’ve become!” She dropped her armload of pillows and straightened, waving her hands to indicate the elegant lace of her nightgown, the carefully arrayed curl of her hair. She had long since mastered the art of sleeping motionlessly, so as to rise perfectly coifed and ready to face whatever the night might hold.

“Everything except an adult,” said Mary gently. “The door could still open for you. The world of your birth could still pull you back.”

“That’s a bedtime story to frighten children,” snapped Jill. “Doors don’t come back when they’re not wanted.”

“You knew what a vampire was when you came here,” said Mary. “Didn’t you wonder why that was? The rules we have exist because mistakes have been made in the past. Things have gone wrong.” Newly made vampires, things of anger and appetite, stumbling through magical doors and back into worlds that had no defenses against them …

Mary suppressed the urge to shiver. The Moors knew how to live with vampires. The Moors were equipped to survive alongside their own monsters.

“Had you gone to the mountains and the care of the werewolf lord, he would tell you the same,” she said. “Or down to the sea. The Drowned Gods change no one young enough to go back to where they came from. We must be careful, lest we attract the attention of whatever force creates the doors. If they stopped, the Moors would be lost.”

“The Moon makes the doors,” said Jill in a waspish tone. “Everyone knows that.”

“There are other theories.”