The doorknob turned violently, but the lock held. The metallic sound echoed in the room like a gunshot. Sarah felt an electric chill run down her spine, but the fear, for the first time, didn’t paralyze her. It became her armor.
“We’re almost done folding, Mark,” Sarah replied, with a calmness that surprised even herself as she signaled for Lily to keep quiet. “Give us five minutes.”