I sit back down, pulling up the teacher list at Crestwood. I find Preston’s last name, typing it in Google, but nothing stands out. I rub my eyes. I know they’re bloodshot after staring at this screen for hours. I feel like I’ve failed Daphne but I’m not giving up.

“Think,” I say aloud as I drill my fingers on my desk. Then it hits me. “Steve.” He’s the only person who would have seen us together. I think back on that night when I met him, the way his door was open a ...