Crime Classification Manual Part II Chapter 6 F 11 A STANDARD SYSTEM FOR INVESTIGATING AND CLASSIFYING VIOLENT CRIMES SECOND EDITION During their break, the two nurses sat down with the PICU logbook that kept track of each patient’s name, age, admission diagnosis, admission date, doctor, discharge status, and assigned nurse. The correlation they found between the children who had died in the PICU during the prior months and the one person whose presence was documented during virtually every one of these codes (cardiac and/or respiratory arrest) presented the two nurses with an appalling reality: either the nurse who had been on duty had incredibly bad luck, or she was deliberately killing babies.