(Rebecca's POV)
Eric is explaining something about a prosthetic hand in a glass case when a familiar laugh cuts through the noise of the exhibition hall, and Eric's voice dims to background noise.
Not because he's boring — Eric is never boring when he talks about robotics. His voice gets low and steady, the way it does when he's spotted a flaw no one else has caught. He leans toward the glass case like the hand inside it owes him an answer. Normally I could listen to him for hours.
My stomach drops.
Sean. Three displays down. Hannah beside him.
My fingers go cold. My chest locks. The exhibition noise thins to a hum and all I can hear is my own breathing, loud and wrong in my ears.
I curl my hands into my palms and force myself to look.
His back is to me. One hand in his pocket. Head
