" accepting the explanation. He had noticed that Hammond was becoming more animated as his fear grew, and that was a problem because his wrists would chafe against the plastic bindings and that would leave marks. “I’m curious about something,” he said conversationally. “What?” Hammond asked. “Your operation is magnificent. How are you able to take the DRD4 samples and link them back to each woman’s ID? I understand just about everything else but that "

― Michael Connelly , Fair Warning (Jack McEvoy, #3; Harry Bosch Universe, #33)