Anna’s hand trembled violently as she stumbled back, her legs buckling beneath her. She hit the ground hard, the impact jarring her bones, but the pain barely registered.

Her fingers flew to her mouth, stifling the scream that threatened to tear from her throat. Her eyes, wide and unblinking, were locked on the window smeared with blood.

The coppery stench filled her nose, making her stomach lurch. “Oh my God? Wh—?” she whispered, then fell silent the moment she heard heavy, steady ...