When they cried during the day, she could tell from another room if the hurt was physical or emotional, to be attended or ignored. But after midnight, all cries were cries of terror, all augured alarm. Were they warm from fever or from sleep? Confused by nightmare or premonition? Might there actually be someone hiding in the closet? You couldn’t treat patients in the dark of course, but Rosie had always imagined ERs were so well lit because during the day, fear stayed at bay and sensible perspective reigned. In the dark, only the horror stories rang true.