Mercy. Had I ever really understood it? Had I actually believed I knew what it was to suffer? To forgive? Mercy, I thought. For the stag, for the Darkling, for us all.

If we’d still been bound by that tether, he might have sensed what I was about to do. My fingers twitched in the sleeve of my coat, curling a scrap of shadow around the blade of my knife—the knife I had plucked from the sands, wet with Mal’s blood. This was the only power that was left to me, one that had never really been mine. An echo, a joke, a carnival trick. It’s something you took from him.

“I don’t need to be Grisha,” I whispered, “to wield Grisha steel.”

With one swift movement, I drove the shadow-wrapped blade deep into the Darkling’s heart.

He made a soft sound, little more than an exhalation. He looked down at the hilt protruding from his chest, then back up at me. He frowned, took a step, tottered slightly. He righted himself.

A single laugh burst from his lips, and a fine spray of blood settled over his chin. “Like this?”

His legs faltered. He tried to stop his descent, but his arm gave way and he crumpled, rolling to his back. It’s simple enough. Like calls to like. The Darkling’s own power. Morozova’s own blood.

“Blue sky,” he said. I looked. In the distance I saw it, a pale glimmer, almost completely obscured by the black mist of the Fold. The volcra were swooping away from it, looking for someplace to hide. “Alina,” he breathed.

I knelt beside him. The nichevo’ya had left off their attacks. They circled and clattered above us, unsure of what to do. I thought I glimpsed Nikolai among them, arcing toward that patch of blue.

“Alina,” the Darkling repeated, his fingers seeking mine. I was surprised to find fresh tears filling my eyes.

He reached up and brushed his knuckles over the wetness on my cheek. The smallest smile touched his bloodstained lips. “Someone to mourn me.” He dropped his hand, as if the weight were too much. “No grave,” he gasped, his hand tightening on mine, “for them to desecrate.”

“All right,” I said. The tears came harder. There will be nothing left.

He shuddered. His eyelids drooped.

“Once more,” he said. “Speak my name once more.”

He was ancient, I knew that. But in this moment he was just a boy—brilliant, blessed with too much power, burdened by eternity.

“Aleksander.”

His eyes fluttered shut. “Don’t let me be alone,” he murmured. And then he was gone.

A sound like a great sigh rushed over us, lifting my hair.

The nichevo’ya blew apart, scattering like ashes in wind, leaving startled soldiers and Grisha staring at the places where they’d been. I heard a wrenching cry and looked up in time to see Nikolai’s wings dissolve, darkness spilling from him in black wisps as he plummeted to the gray sand. Zoya ran to him, trying to slow his fall with an updraft.