I have been driving Route 9 out of Cambridge for nineteen years. I know every bump in the road and every loose stone in the gravel driveways. More importantly, I know the kids. I know who needs the heater on high in the morning and who needs to sit near the back to hide their morning tears. I know when a child changes.

Tyler Boyd was seven. He was the kind of kid who lived for prehistoric life. Every single afternoon for the first month of the school year, he was the first one up the folding steps. He wouldn’t even wait for the doors to finish hissing shut before he was unloading facts about Tyrannosaurus rex or some long-necked creature whose name I could never quite catch. He was bright, loud, and full of life.

Then, around the middle of October, the silence started.

It wasn’t a sudden drop-off. It was a slow, creeping fade. He stopped coming up the steps with that frantic, jumpy energy. He started boarding slowly, his eyes glued to the rubber matting on the floor. He stopped talking about dinosaurs entirely. I tried to pull him back in with a few questions, but he just gave me these one-word answers, his gaze fixed somewhere past my shoulder.

I told myself it was just a phase. Kids go through shifts. Maybe he was bored of dinosaurs. Maybe he was having trouble in class. I watched him settle into the front seat every day, his backpack pulled tight against his chest like a shield. He didn’t want to talk to the other kids anymore. He wanted to sit directly behind me, where he could watch the road and keep an eye on everything happening outside the windows.

One Thursday in November, the weather turned bitter. The wind was whipping through the valley, and Tyler had his coat on tight, but he was reaching for the metal handrail to climb the steps.

His coat sleeve hitched up just enough. I saw the marks on his forearm.

They weren’t scratches. They weren’t from a fall on the playground. They were dark, purplish lines arranged in a way that left no room for doubt. It was the shape of a hand. A large, angry hand.

I felt the blood drain from my face, but I kept my grip on the wheel. I didn’t want him to know I’d seen it. I didn’t want to spook him.

“You okay there, buddy?” I asked, my voice sounding thin to my own ears.

He yanked his sleeve down fast, his eyes darting toward the other kids on the bus. He leaned in, his lips barely moving. “Mom says I bruise easy.”

He stared at me, his eyes wide and pleading. “Don’t tell anybody, okay?”