Mal and Tolya—maybe all of the others—believed that the amplifiers had to be brought together, but they had never felt the thrill of using merzost. It was something no other Grisha understood, and in the end, it was what bound the Darkling and me most closely—not our powers, not the strangeness of them, not that we were both aberrations, if not abominations. It was our knowledge of the forbidden, our desire for more.

The minutes ticked by, and my nerves began to jangle. The Squallers could maintain the acoustic blanket for only so long. What if the Darkling waited until night to attack? Where are you?

The answer came in a pale violet glow, moving toward us from the east.

Two clicks. We fanned out in the formation we had practiced.

Three clicks. That was my signal. I raised my hands and set the Fold ablaze. In the same moment, I bent the light, letting it flow around each of our soldiers like a stream.

What did the Darkling see? Dead sands, the flat sheen of a gray sky, the ruined hulks of skiffs falling to dust. And that was all. We were invisible. We were air.

The skiff slowed. As it drew closer, I saw its black sails marked with the sun in eclipse, the strange, smoked-glass quality of its hull. The violet flame of the lumiya shimmered over its sides, vague and flickering in the bright glare of my power.

Squallers stood at the masts in their blue kefta. A few Inferni lined the railings, flanked by Heartrenders in red, heavily armed oprichniki in gray. It was a spare force. The students must be belowdecks. The Darkling stood at the prow, surrounded by his shadow horde. As always, the first sight of him was practically a physical blow. It was like going to him in a vision: He was simply more real, more vibrant than everything else around him.

It happened so fast, I barely had time to register it. The first shot struck one of the Darkling’s oprichniki. He toppled over the skiff’s railing. Then the shots came in a rapid patter, like raindrops on a rooftop at the start of a storm. Grisha and oprichniki slumped and fell against one another as confusion broke out aboard the glass skiff. I saw more bodies fall.

Someone shouted, “Return fire!” and the air erupted with the jarring thunder of gunshots, but we were safely out of range. The nichevo’ya beat their wings, turning in wide arcs, searching for targets. Flints were struck, and the Inferni who remained on the skiff sent gouts of flame flaring through the air. Cloaked from sight, Harshaw turned the fire back on them. I heard screams.

Then silence, broken only by moaning and shouted orders from the glass skiff. Our sharpshooters had done their job well. The area around the railing was littered with bodies. The Darkling, unharmed, was pointing to a Heartrender and issuing some kind of command. I couldn’t make out his words, but I knew this was when he would use the students.