“Matthew will be with Benjamin. Find him.” I walked away without waiting for Baldwin or Janet to agree. “Where are you, Mr. Knox?”

“Dr. Bishop.” Knox was waiting for me when I rounded the corner. “Come. Have a drink with me.

You won’t be leaving this place, and it may be your last chance to enjoy the comforts of a warm room—until you conceive Benjamin’s child, that is.”

Behind me I slammed down an impenetrable wall of fire and water so that no one could follow.

Then I threw up another behind Knox, boxing us into a small section of the corridor.

“Nicely done. Your spell-casting talents have emerged, I see,” said Knox.

“You will find me . . . altered,” I said, using Gallowglass’s phrase. The magic was waiting inside me, begging to fly. But I kept it under control, and the power obeyed me. I felt it there, still and watchful.

“Where have you been?” Knox asked.

“Lots of places. London. Prague. France.” I felt the tingle of magic in my fingertips. “You’ve been to France, too.”

“I went looking for your husband and his son. I found a letter, you see. In Prague.” Knox’s eyes gleamed. “Imagine my surprise, stumbling upon Emily Mather—never a terribly impressive witch—binding your mother’s spirit inside a stone circle.”

Knox was trying to distract me.

“It reminded me of the stone circle I cast in Nigeria to bind your parents. Perhaps that was Emily’s intention.”

Words crawled beneath my skin, answering the silent questions his words engendered.

“I should never have let Satu do the honors where you were concerned, my dear. I’ve always suspected that you were different,” Knox said. “Had I opened you up last October, as I did your mother and father all those years ago, you could have been spared so much heartache.”

But there had been more in the past fourteen months than heartache. There had been unexpected joy, too. I clung to that now, anchoring myself to it as firmly as if Janet were working her magic.

“You’re very quiet, Dr. Bishop. Have you nothing to say?”

“Not really. I prefer actions to words these days. They save time.”

At last I released the magic spooled tightly within me. The net I’d made to capture Knox was black and purple, woven through with strands of white, silver, and gold. It spread out in wings from my shoulder blades, reminding me of the absent Corra, whose power, as she promised, was still mine.

“With knot of one, the spell’s begun.” My netlike wings spread wider.

“Very impressive bit of illusory work, Dr. Bishop.” Knox’s tone was patronizing. “A simple banishing spell will—”

“With knot of two, the spell be true.” The silver and gold threads in my net gleamed bright, balancing the dark and light powers that marked the crossroads of the higher magics.

“It’s too bad Emily didn’t have your skill,” Knox said. “She might have gotten more out of your mother’s bound spirit than the gibberish I found when I stole her thoughts at Sept-Tours.”

“With knot of three, the spell is free.” The giant wings beat once, sending a soft eddy of air through the magical box I’d constructed. They gently separated from my body, rising higher until they hovered over Knox. He cast a look upward, then resumed.

“Your mother babbled to Emily about chaos and creativity and repeated the words of that charlatan Ursula Shipton’s prophecy: Old worlds die and new be born. That’s all I got out of Rebecca in Nigeria, too. Being with your father weakened her abilities. She needed a husband who could challenge her.”

“With knot of four, the power is stored.” A dark, potent spiral slowly unwound at the spot where the two wings met.

“Shall we open you up and see if you are more like your mother or your father?” Knox’s hand made a lazy gesture, and I felt his magic cut a searing path across my chest.

“With knot of five, this spell will thrive.” The purple threads in the net tightened around the spiral.

“With knot of six, this spell I fix.” The gold threads gleamed. A casual brush of my hand sealed the wound in my chest.

“Benjamin was quite interested in what I told him about your mother and father. He has plans for you, Diana. You will carry Benjamin’s children, and they will become like the witches of old: powerful, wise, long-lived. There will be no more hiding in the shadows for us then. We will rule over the other warmbloods, as we should.”

“With knot of seven, the spell will waken.” A low keening filled the air, reminiscent of the sound made in the Bodleian. Then it had been a cry of terror and pain. Now it sounded like a call for vengeance.

For the first time, Knox looked worried.

“You cannot escape from Benjamin, any more than Emily could escape from me at Sept-Tours. She tried, of course, but I prevailed. All I wanted was the witch’s spell book. Benjamin said Matthew once had it.” Knox’s eyes took on a fevered glint. “When I possess it, I will have the upper hand over the vampires, too. Even Gerbert will bow to me then.”

“With knot of eight, the spell will wait.” I pulled the net into the twisted shape that signified infinity. As I manipulated the threads, my father’s shadowy form appeared.

“Stephen.” Knox licked his lips. “This is an illusion, too.”

My father ignored him, crossing his arms and looking at me sharply. “You ready to finish this, peanut?”

“I am, Dad.”

“You don’t have the power to finish me,” Knox snarled. “Emily discovered that when she tried to keep me from having knowledge of the lost book of spells. I took her thoughts and stopped her heart.

Had she only cooperated—”

“With knot of nine, the spell is mine.”

The keening rose into a shriek as all the chaos contained in and all the creative energy that bound the creatures together in one place burst from the web I’d made and engulfed Peter Knox. My father’s hands were among those that reached out of the dark void to grasp him while he struggled, keeping him in a whirling vortex of power that would eat him alive.

Knox cried out in terror as the spell drained his life away. He unraveled before my eyes as the spirits of all the weavers who had come before me, including my father, deliberately unpicked the threads that made up this damaged creature, reducing Knox to a lifeless shell.

I knew that one day I would pay a price for what I’d done to a fellow witch. But I had avenged Emily, whose life had been taken for no other reason than a dream of power.

I had avenged my mother and father, who loved their daughter enough to die for her.

I drew the goddess’s arrow from my spine. A bow crafted from rowan and trimmed with silver and gold appeared in my left hand.

Vengeance had been mine. Now it was time for the goddess’s justice.

I turned to my father, a question in my eyes.

“He’s upstairs. Third floor. Sixth door on the left.” My father smiled. “Whatever price the goddess exacted from you, Matthew is worth it. Just as you were.”

“He’s worth everything,” I said, lowering the magical walls I’d built and leaving the dead behind so I could find the living.

Magic, like any resource, is not infinite in its supply. The spell I’d used to eliminate Knox had drained me of a significant amount of power. But I’d taken the risk knowing that without Knox, Benjamin had only physical strength and cruelty in his arsenal.

I had love and nothing more to lose.

Even without the goddess’s arrow, we were evenly matched.

The house had far fewer rooms in it now that Knox’s illusions were gone. Instead of an unending array of identical doors, the house now showed its true character: filthy, rife with the scents of death and fear, a place of horror.

My feet raced up the stairs. I couldn’t spare an ounce of magic now. I had no idea where any of the others were. But I did know where to find Matthew. I pushed open the door.

“There you are. We’ve been expecting you.” Benjamin was standing behind a chair.

This time the creature in it was undeniably the man I loved. His eyes were black and filled with blood rage and pain, but they flickered in recognition.

“Queen’s Gambit complete,” I said.

Relieved, Matthew’s eyes drifted closed.

“I hope you know better than to shoot that arrow,” Benjamin said. “In case you’re not as well versed in anatomy as you are in chemistry, I’ve made sure that Matthew will die instantly if my hand isn’t here to support this.”

This was a large iron spike Benjamin had driven into Matthew’s neck.

“You remember when Ysabeau poked her finger into me at the Bodleian? It created a seal. That’s what I’ve done here.” Benjamin wiggled the spike a bit, and Matthew howled. A few drops of blood appeared. “My father doesn’t have much blood left in him. I’ve fed him nothing but shards of glass for two days and he’s been slowly bleeding out internally.”

It was then I noticed the pile of dead children in the corner.

“Earlier meals,” Benjamin said in response to my glance. “It was a challenge to come up with ways to torment Matthew, since I wanted to make sure he still had eyes to see me take you, and ears to hear your screams. But I found a way.”

“You are a monster, Benjamin.”

“Matthew made me one. Now, don’t waste any more of your energy. Ysabeau and Baldwin are bound to be here soon. This is the very room where I kept Philippe, and I left a trail of bread crumbs to make sure my grandmother finds it. Baldwin will be so surprised to hear who it was that killed his father, don’t you think? I saw it all in Matthew’s thoughts. As for you . . . well, you cannot imagine the things Matthew would like to do to you in the privacy of his bed. Some of them made me blush, and I’m not exactly prudish.”

I felt Ysabeau’s presence behind me. A rain of photographs fell upon the floor. Pictures of Philippe.

Here. In agony. I shot a look of fury at Benjamin.

“I would like nothing more than to shred you to pieces with my bare hands, but I would not deprive Philippe’s daughter of the pleasure.” Ysabeau’s voice was cold and serrated. It rasped against my ears almost painfully.

“Oh, she’ll have pleasure with me, Ysabeau. I assure you of that.” Benjamin whispered something in Matthew’s ear, and I saw Matthew’s hand twitch as if he wanted to strike his son but his broken bones and shredded muscles made that impossible. “Here’s Baldwin. It’s been a long time, Uncle. I have something to tell you—a secret Matthew has been keeping. He keeps so many, I know, but this is a juicy one, I promise.” Benjamin paused for effect. “Philippe did not die because of me. It was Matthew who killed him.”

Baldwin stared at him impassively.

“Do you want to take a shot at him before my children send you to hell to see your father?”

Benjamin asked.

“Your children won’t be sending me anywhere. And if you think I am surprised by this supposed secret, you are even more delusional than I feared,” Baldwin said. “I know Matthew’s work when I see it. He’s almost too good at what he does.”

“Drop that.” Benjamin’s voice cracked like a whip as his cold, unfathomable eyes settled on my left hand.

While the two of them were having their discussion, I’d taken the opportunity to lift the bow.

“Drop it now or he dies.” Benjamin withdrew the spike slightly, and the blood flowed.

I dropped the bow with a clatter.

“Smart girl,” he said, thrusting the spike home again. Matthew moaned. “I liked you even before I learned you were a weaver. So that’s what makes you special? Matthew has been shamefully reluctant to determine the limits of your power, but never fear. I’ll make sure we know exactly how far your abilities extend.”

Yes, I was a smart girl. Smarter than Benjamin knew. And I understood the limits of my power better than anyone else ever would. As for the goddess’s bow, I didn’t need it. What I needed in order to destroy Benjamin was still in my other hand.

I lifted my pinkie slightly so that it brushed Ysabeau’s thigh in warning.

“With knot of ten, it begins again.”

My words came out like a breath, insubstantial and easy to ignore, just as the tenth knot was a seemingly a simple loop. As they traveled into the room, my spell took on the weight and power of a living thing. I extended my left arm straight as though it still held the goddess’s bow. My left index finger burned a bright purple.

My right hand drew back in a lightning-quick move, fingers curled loosely around the white fletchings on the golden arrow’s shaft. I stood squarely at the crossroads between life and death.

And I did not hesitate.

“Justice,” I said, and unfurled my fingers.

Benjamin’s eyes widened.

The arrow sprang from my hand through the center of the spell, picking up momentum as it flew. It hit Benjamin’s chest with audible force, cleaving him wide open and bursting his heart. A blinding wave of power engulfed the room. Silver and gold threads shot everywhere, accompanied by strands of purple and green. The sun king. The moon queen. Justice. The goddess.

With an otherworldly cry of frustrated anguish, Benjamin loosened his fingers, and the blood-covered spike began to slip.

Working quickly, I twisted the threads surrounding Matthew into a single rope that caught the end of the spike. I pulled it taut, keeping it in place as Benjamin’s blood poured forth and he dropped heavily to the floor.

The few bare lightbulbs in the room flickered, then went out. I’d had to draw on every bit of energy in the place to kill Knox and then Benjamin. All that was left now was the power of the goddess: the shimmering rope hanging in the middle of the room, the words moving underneath my skin, the power snapping at the ends of my fingers.