Simon didn’t take as long to react, and he turned to me in an instant, his copper eyes finding me as he demanded, “You . . . you did this.” It wasn’t a question because, of course, he’d seen the truth with his own two eyes.

He looked stunned, and maybe a little pissed that I hadn’t told him everything I was capable of, when we heard Tyler. He exhaled, releasing a gut-wrenching gurgle.

And like that, I was no longer concerned with Simon or Agent Truman or even my dad. I dropped beside Tyler as blood trickled from the corner of his mouth. This was it, I thought, even as I was silently screaming not yet . . . not yet . . . not yet!

“Tyler,” I whispered, leaning as close to him as I could get so no one else could hear us. My windpipe felt crushed, and it was hard to swallow. My eyes ached.

He was burning up again, but I guess none of that mattered anymore. It would soon be over. He’d be at peace. “I’m here. I’m staying right here.” I reached for his hand, no longer worried about hurting him, and his eyelids fluttered open.

He tried to focus, but his sightless eyes made it impossible, and his gaze darted wildly about, making him look lost and confused. I finally gave myself permission to cry, because there was nothing left to do. I’d taken him to the wrong place.

Maybe, I thought desperately. Maybe if we all tried . . . maybe there is still time.

I petitioned Agent Truman, who was just standing there, gaping at his empty hand. “Please. If we can just get him up to that hill. If you help me, I promise I’ll go with you.” I pointed to the place where the fireflies had been just a few short minutes ago.

But the rocky peak was dark now. The fireflies were gone.

Beside me, Tyler sputtered, and I turned to see blood spewing from his mouth and trickling from his nose too. When he gasped, he choked on it, and then choked some more.

He really was drowning, and soon it would be over.

“What the—”

I didn’t know what Agent Truman was trying to say, but Tyler’s hand suddenly went weaker in mine, his fingers going limp as his gasps grew frail and reedy.

“Kyra.” My dad tried to get my attention, but it barely registered. How could I care? How could anything else matter when Tyler was dying? When I was losing him?

And then a cloud of light passed over the top of me.

I wanted to ignore it, but it was far too radiant to be overlooked. Still holding Tyler’s hand, because I wasn’t ready to say good-bye, I glanced skyward; and when I did, my chest tingled and I felt light-headed.

They were amazing this close-up. The fireflies. They were so close I could single out individual clusters of the tiny, glowing insects. It wasn’t like before when they’d appeared to be one enormous knot. Rather, they were like a collection of several groups that had all come together. Like tribes working in unison.

And they were positively breathtaking.

Dropping Tyler’s hand at last, I stood up as I watched while this swarm—this giant, undulating cloud—began to break apart. Beyond me, at the crater, something was happening, and there was light pulsing up from below, from deep down inside Devil’s Hole.

Whatever was down there was alive. And it was coming closer. It was bright and fast, and loud, and it sounded vaguely like the fireflies above us—like the millions of wings that beat. Only louder. Angrier.

And when they were finally there and we could see them at last, we knew what they were. They were fireflies too. But there were so many more of them as they emerged from Devil’s Hole. So many it was impossible to see anything but them. They were everywhere. All around us. Eating up all the space until there was no room, no air, no nothing left at all.

I would have run, but I didn’t know where to go. I couldn’t move or breathe without touching wings and legs and antennae. I could feel them crawling and fluttering and bumping into me, tangling in each and every strand of my hair, creeping beneath every layer of clothing, crawling up my nose, and nesting in my ears.

I slapped and scratched and flung them away from me, knowing it was useless because there would only be more to take their places but totally unwilling to accept their infestation all the same.

The flash, when it came, was nothing like the first time, when I’d felt it throughout my entire body. When I’d tingled and been weightless and felt tugged by whatever force had been pulling me from the ground.

This flash was the same, but different.

It was blinding, exactly the way it had been the night I’d disappeared from Chuckanut Drive while my father had watched helplessly. Blinding to the point that I couldn’t see, or sense, anything for several long minutes. I tumbled to the ground, entirely disoriented. I couldn’t tell up from down or left from right.

I opened my mouth to call for help, but no sound came out. I was speechless, sightless, helpless.

And then, like before, on that fateful night on Chuckanut Drive, there was nothing. . . .

EPILOGUE

SEVENTEEN DAYS. THAT’S HOW MUCH TIME HAD passed since I woke up beneath the scorching sun near the mouth of Devil’s Hole.

Just me and Simon.

We’d stayed there for nearly an hour—maybe less, maybe more. It was hard to know for sure. Time felt irrelevant after everything we’d been through. We’d searched for the others—Tyler, my dad, even Agent Truman—but they were nowhere. I tried long after Simon had given up on them, convinced they were gone. Convinced they weren’t coming back anytime soon.

I’d shouted for them until I was hoarse and scrambled up the rocky hills to get a better view of the deserty landscape. I skinned my knees and cut my palms, but there was no one there who could be infected by my recklessness.