I slept three hours without meaning to. I'd sat down beside my mother's notebook intending to read every line of the Aeloria chapter end to end, and my body — older than my head and more honest — folded sideways and took the choice from me. I woke in grey light, fully dressed, the notebook open against my hip, the pin still warm at my collar. The fire had burned itself out.

The lock turned from the outside.

Mira came in with a tray and the careful quiet of someone who has woken a stranger in a strange room and would rather not be the first wrong thing they see. "Six o'clock. Breakfast, then rules."

I sat at the writing desk. She set it down: bread, butter, a pot of dark jam, a soft-boiled egg already cracked in its cup, tea. A silver fork. A silver spoon. No knife.

She watched me notice. "No blades in your room until the residency is formalised. I'll bring one after. The jam's gooseberry. Eat all of it — you'll thank me by midday."

I ate. The bread was warm and the gooseberry seeds caught in my teeth in a way that made me, for one unguarded second, eight years old in my grandmother's kitchen in a town that no longer had a grandmother in it. I didn't cry. I filed it instead: gooseberry. Means something. Find out what. My grandmother had grown gooseberries against the south fence and my mother had hated them and I had loved them, and no one on this island could have known that, and someone had put them in a pot on my tray on my second morning anyway. I was beginning to understand that nothing here was an accident, and that the accidents that looked like kindness were the ones to watch.

When I'd finished, Mira folded her hands and recited like a girl who'd learned it under threat of the cuffs being noticed.

"You'll be Marsh, Awakener-class in formal correspondence. Lydia in private. Miss Marsh to anyone with a title. Three required classes — Recognition and Resistance to Compulsion, with Father Aldric. Treaty Law, with Lord-Scholar Albini. Control of the Bond, taught in Lady Venantius's old chambers, kept open in her memory. A fourth elective we'll choose later."

"Understood."

"You'll repeat that back to me less than you think you will," she said dryly, "once you've worked out which of these rules are mine and which are theirs. Forbidden: the north wing, the sub-levels, the Observatory after dark. Permitted: the library, any hour. The Moon Garden, daylight only."

"Understood."

"You'll be searched by my hand before every meal. Pockets. Silver, wood, food I didn't give you. I'll be courteous and quick." She didn't pause for an answer to that one, which I appreciated. "Final rule. If a door locks behind you and someone comes, you wait. If a door locks behind you and no one comes — then you may panic. Then you should. Sit on the floor, back to the door, and count to seven hundred. By seven hundred someone will have arrived. If they haven't, you're in a kind of trouble I don't have the rank to advise you on."

"Has it happened to anyone?"

"Once. The person sat past nine hundred before help came. She was unharmed." A beat. "She did not finish her year."

I marked the gap in that sentence and didn't reach into it. Not yet.

"That's the list?"

"That's the formal list. There's one more I'll give you because I like you, and you can't say where you heard it." She glanced at the closed door and lowered her voice anyway. "Don't accept a gift your first week. Not a flower in a vase, not a book left in your chair, not a piece of fruit on a table you don't remember passing. You find a gift, you tell me, I make it vanish. First-week gifts aren't gifts. They're contracts. The giver knows exactly what they're doing. You don't. So I do it for you."

"And after the first week?"

"After the first week, I teach you to read them."

She rolled up her left sleeve to the elbow. Three pale lines ran the length of her forearm, healed long ago, raised against the brown skin. "This is what the rules cost. The bottom one was for speaking to a vampire who hadn't spoken to me. I was fourteen. The middle one was a first-week gift. I was fifteen. The top one was the door rule. I sat the full count. After it, I tried the lock from my side." She traced the highest scar. "The lock is built to punish any human who works it from inside. By design. I'm telling you this so you understand the rules aren't theatre. Every one was carved into the staff corridor wall because someone broke it once and the price was bad enough to be worth remembering. The wall is full, Lydia. You will not be the first stubborn girl. You only get to be one of the ones who lived."

She rolled the sleeve down. I looked at my hands a while, then at her.

"Mira. When's your birthday?"

She blinked. I'd caught her flat-footed and watched her know it.

"April fourteenth."

"How old does that make you?"

"Nineteen."

"Same as me. Mine was March." I let a beat go by. "How do you know it was March?"

"I'm Lord Cassian's choice for your attendant. I read your file. It's thin — mostly photographs of your mother. Three of you: two before you were six, one school portrait at sixteen, the most recent thing his people could find. You weren't on a single platform they could reach. You're the first Awakener in fifty years whose whole life fits in one folder."

I sat with that. "What do you want for your birthday?"

She didn't answer for a long moment. Then, low: "No one's asked me that in three years."

I went to the suitcase. I'd packed in such a hurry I still wasn't sure what I'd brought, but my mother's training held — always have something sweet in your luggage, in case of weather — and at the bottom, in a fabric bag, was a single bar of dark chocolate with sea salt, made by a woman in Camden who wouldn't sell to anyone who couldn't name the seabird on her sign. I broke it in half and held a piece out.

"For April."

She didn't move.

"It isn't a gift," I said, before that word could climb up between us. "It's payment. I owe you for four rules. This clears one. You'll get the rest in installments."

She laughed — a startled, sideways sound, like someone had jabbed her in the ribs and she'd forgotten what to do with it. She took the chocolate, held it, then folded it into an inner pocket of her wool dress that I was fairly sure she had sewn there herself, for exactly this kind of moment that the dress had not been designed to allow.

"You'll want to be careful with that," she said, not looking at me. "The trading. It's the most dangerous thing you've done since you got off the boat, and you don't even know why yet." She straightened, businesslike again, but her hand pressed once, flat, over the pocket. "Thank you, Lydia."

She gathered the tray. At the door she stopped, set it back on the side-table, and went very still — head tilted, the specific stillness of a person recalibrating around something heard through a wall. Then she turned to me and lifted one finger to her lips.

"He's outside. Don't look at the door."

I didn't look at the door.

For a stretch of seconds I heard nothing. Then the lock turned — softly, from the outside, with the hush of a hand too quiet to be human — and the door did not open. I kept my eyes on the window. A breath later the lock eased back to closed, and there was the smallest whisper of a body withdrawing at a speed that should not have made any sound at all and made one only because I was straining to catch it.

He hadn't knocked. He hadn't entered. He had simply been there, at my door, on the first morning, long enough to confirm something — that the door still held, that I was still inside it, that some figure in his accounting still balanced — and then he was gone without a trace.

The strange thing was what it did to me. I had braced, since the ferry, for cruelty I could name; I had a face ready for it. I did not have a face ready for a man who would come to a locked door at dawn and stand on the wrong side of it and leave without taking anything. It unsettled me more than a threat would have. A threat I could have refused. This I did not know the shape of well enough to refuse.

Mira stayed frozen at the side-table. When she finally turned, her face had gone the colour of the fog.

"That was Cassian."

I waited.

"He has never come to a guest's door on the first morning. Not once in fifty years. The Awakener before you — Sigrid — he didn't go to her quarters until the eleventh day. And the one before her, Catherine, the one whose book Father Aldric will hand you — six days. There's a protocol. There's a tradition older than my grandmother. The Lord of the House does not stand at a stranger's door on day one. It is not done."

The cup rattled in its saucer as she picked the tray up again. I watched her try to fit it into the protocol she'd recited to me an hour ago and fail, and the failing frightened her more than any broken rule would have, because Mira's whole survival on this island was built on knowing what was done and what was not, and the Lord of the House had just done a thing that was not.

"Why would he?" she said. Not to me — to the air, the way you ask a question you already know has no safe answer.

I had none. I'd been on the island twenty-two hours. I'd shared a room with Cassian Venantius for under three minutes total, and in eleven sentences of his I had heard, he had not once used the word you.

My hand was at the pin before I'd decided to move it — the same gesture I'd made at the Council doors, the same one I'd made twice now in this room. A habit less than a day old.

"Get me the schedule for Father Aldric's class," I said.

"Today. It's at ten."

I stood. "Then I have three hours to look more obedient than I am."

She managed a small, real smile. "I'll help."

She went out. The lock engaged behind her.

I sat on the edge of the bed and turned to a clean page of my mother's notebook, and under the diagram of the barred window I wrote one line in handwriting that came out steadier than I felt.

He came on the first morning. He should not have.

And beneath it, smaller — the half of the question I had not, until now, been brave enough to set down in ink:

Did he know my mother?