My heart didn't just hammer, it tried to beat its way out of my chest. It was a frantic bird trapped in the cage of my ribs, slamming against bone in a primal, mindless panic. The world narrowed to two impossible, colliding realities: Mason, still buried deep inside me, and Lily’s voice, cheerful and oblivious, echoing from the front hall.

“Who the fuck is that?” he growled, the vibration a low, lethal hum that traveled from his chest directly into my spine.

My throat was sealed shut. I couldn’t have answered him if I’d wanted to. Before the question even fully registered, the front door burst open. Light from the...