Only one burned at my touch.

I knew it was the right door, before I saw the telltale Caster circles carved into the rowan wood, just like the Temporis Porta.

This was the doorway to the heart of the Great Keep. The one place any son of Lila Jane Evers Wate would instinctively find his way, whether or not he was a Wayward.

The library.

Pushing my way through the massive doors directly across from the Temporis Porta, I knew it was time to face the most dangerous part of my journey.

Angelus would be waiting.

The doors were just the beginning. The moment I stepped into the inner chamber, I found myself standing in an almost entirely reflective room. If it was supposed to be a library, it was the strangest one I’d ever seen.

The crumbling stones beneath my feet, the stubbled cave walls, the ceiling and floor that grew into stalactites and stalagmites as the room circled back upon itself—they all seemed to be made of some kind of transparent gemstone, cut into a thousand impossible facets that reflected the light in every direction. It looked like I was standing in one of the eleven jewelry boxes in Xavier’s collection.

Except less claustrophobic. A small opening in the ceiling let in enough natural light to catch the whole room in a dizzying glow. The effect reminded me of the tidal cave where we’d first met Abraham Ravenwood, on the night of Lena’s Seventeenth Moon. In the center of this room, there was a pond of water the size of a swimming pool. The body of milky white water churned as if there was a fire beneath it. It was the color of Sarafine’s sightless opaque eyes, before she died.…

I shuddered. I couldn’t think about her, not now. I had to focus on surviving Angelus. Defeating him. I took a deep breath and tried to get my bearings. What was I dealing with?

My eyes fixed on the bubbling white liquid. In the center of the pool, a small stretch of earth rose above the water, like a tiny island.

In the center of the island was a pedestal.

On the pedestal was a book, surrounded by candles that flickered with strange green and gold flames.

The book.

I didn’t need someone to tell me which book it was, or what it was doing here. The reason there was an entire library devoted to only one book, and with a moat around it.

I knew exactly why it was here, and why I was.

It was the only part of this whole journey I understood. The only thing that was perfectly clear from the moment Obidias Trueblood told me the truth about what had happened to me. It was The Caster Chronicles, and I was here to destroy my page. The one that killed me. And I had to do it before Angelus could stop me.

After all I’d learned about being a Wayward and finding my way—this was where it led. There was no way left to go, no more path to find.

I was at the end.

And all I wanted was to go back.

But first I had to get to that island—to the pedestal and The Caster Chronicles. I had to do what I’d come here to do.

A shout from across the room startled me. “Mortal Boy. If you leave now, I will leave you your soul. How’s that for a challenge?” Angelus appeared on the other side of the pool. I wondered how he got over there, and I wished there were as many ways to leave this room as there were to enter it.

Or at least, as many ways home.

“My soul? No, you won’t.” I stood at the edge of the pool and chucked a rock into the bubbling water, watching it disappear. I wasn’t stupid. He would never let me go. I would end up like Xavier or Sarafine. Black wings or white eyes—it didn’t make a difference. In the end, we were all bound in his chains, whether you could see them or not.

Angelus smiled. “No? I suppose that’s true.” He gestured with his hand, and at least a dozen rocks rose into the air around him. They fired themselves at me, one after another, hitting with uncanny accuracy. I flung my arms across my face as a rock sailed past.

“Very mature. What are you going to do now? Tie me up and stick me in your old boneyard? Blind and chained like an animal?”

“Don’t flatter yourself. I don’t want a Mortal pet.” He twisted his finger, and the water began to spin into a kind of whirlpool. “I’ll just destroy you. It’s easier for all of us. Though not much of a challenge.”

“Why did you torture Sarafine? She wasn’t a Mortal. Why bother?” I shouted.

I had to know. It felt like our fates were tied together somehow—mine, Sarafine’s, Xavier’s, and those of all the other Mortals and Casters Angelus had destroyed.

What were we to him?

“Sarafine? Was that her name? I had almost forgotten.” Angelus laughed. “Do you expect me to concern myself with every Dark Caster who ends up here?”

The water churned violently now. I knelt and touched it with one hand. It was freezing cold and sort of slimy. I didn’t want to swim through it, but I couldn’t tell if there was another way across.

I looked up at Angelus. I didn’t know how this whole challenge thing was going to take shape, but I thought it was better to keep him talking until I figured it out. “Do you blind every Dark Caster and make them fight to the death?”

I looked back at the water. It rippled where I had touched it, turning clear and calm.

Angelus folded his arms, smiling.

I kept my hand in the water as the transparent current spread across the pool, though my hand was going numb. Now I could see what was really beneath the milky surface.

Corpses. Just like the ones in the river.

Floating upward, their green hair and blue lips looked like masks on their bloated dead bodies.