“Or maybe,” Patrick said, “we’re already infected and it’s just a matter of time.”

I looked down at the backs of my hands, fish-white in the darkness. Was something already creeping beneath my skin, transforming me? I felt each breath, cool in my throat, filling my lungs.

The changing wind brought the barking of the dogs. An angry ruckus, full of snaps and snarls. As we drew nearer, the lights clicked on in our house, our living room lighting up as clear as day, a beacon in the darkness. Relief spread through me, a warmth in my chest. We were about a hundred yards away from home and safety.

Uncle Jim came into view inside, heading for the front door.

“Thank God,” I said.

Uncle Jim opened the door and stepped out onto the porch. I started to jog forward, but Patrick grabbed my arm. “Hang on,” he whispered.

Something in his voice scared me into stillness.

We stopped behind the big old ash tree with the rope swing. I rested my hand on the trunk, feeling beneath my palm the carving that Alex had made last year with Patrick’s folding knife: A.B.+P.R. in a heart. I remembered watching her work the blade into the bark, her brow furrowed with concentration, her teeth pinching that full lower lip. As usual I was the third wheel, grinding a stick into an anthill and doing my best not to notice the way Alex’s shirt rode up when she leaned forward, revealing a strip of tan skin at her lower back.

After all the things that had happened, the memory seemed like a glimpse into another world.

I felt JoJo clutching my side again, but I couldn’t move to comfort her. I was rooted to the ground, my eyes fixed on Uncle Jim.

He stood perfectly still in the middle of the porch, lit from the glow of the house.

“What’s he doing?” Rocky whispered, and Patrick hushed him.

We watched Uncle Jim do nothing.

And then he shuddered.

Not a shiver from the cold but a full-body shudder as if an electric current had passed through him. Then he was still once again.

A few seconds went by.

Fear clawed up my throat, and I swallowed it down.

“I’m gonna go to him,” I whispered to Patrick. “He’s fine.”

I started forward, but Patrick’s hand clamped down on my arm. I shook him loose and stepped into the open.

My brother’s voice came at me quietly from behind. “Chance,” he said. “Wait. Just wait.”

The grief in his voice made my denial melt away, and I halted. The wind blew through my jacket. The bitterness was still in the air, riding the back of my tongue. I felt a pressure behind my face. I didn’t keep on, but I didn’t retreat behind the tree either.

Uncle Jim had no way to see me in the darkness.