He suggested that a young nurse under pressure might not remember accurately what she wrote at half past eleven at night on a shift that had already run twelve hours.

Alina Boyce listened to all of it with her hands in her lap.

Then she said: “I wrote 11:31 because it was 11:31. I checked the wall clock and I checked my watch, because my preceptor told me in my first week that the time is the only part of this you can’t fix later.”

Tolliver asked whether she was certain. “Yes, sir.”

“How can you be certain, eleven months into your career, of one bag on one night?”

“Because I hadn’t seen a person like that before,” she said. “I have now. But she was the first, and I remember every single thing I did, and I will remember it when I’m sixty.”