Someone screams. The sound pierces the air, sending me scrambling. I nearly knock Regina over in my haste to get to the door. She calls after me, but I ignore it, thundering down the stairs two at a time. My heart is in my throat, beating in time with my breath. I know that scream. Delighted in that scream. But this isn’t a sound of pleasure. This is panic. And it belongs to Mia.