After the second murder, Kim Hyeok had asked the National Intelligence Service (NIS) Behavioral Science Unit in Seoul, to prepare a psychological profile of the man who called himself the Reaper. As part of its Criminal Apprehension Program, the BSU had amassed files on every modern serial killer, and its experts used the known tendencies of those who had been caught to extrapolate the probable behavior and personal characteristics of the ones still at large.
The BSU analyst, a glib, chatty man named Shin Hyun who gave the impression that he enjoyed his work too much, had called Kim Hyeok to go over the profile with him. The evidence was necessarily sketchy, the results largely guesswork. Still, it was better than nothing.
