Martin's eyes followed Raylan's hands as they opened the binder of patient files.

"All of my work is sanctioned by the hospital. I'm just... in here saving lives," he said airily. "But tell New York I'm flattered." He clasped his hand. "But you mentioned pen pals. You must know I get a lot of fan mail." Laughing, he remarked "People just love serial killers, you know!" He shrugged modestly. "I wouldn't call them my friends, though. Truth be told, my friends largely fled after my arrest. Good thing I was always a family man first," he said, looking at Malcolm. "Friends are fleeting but family is forever, right Malcolm?"

"Dr Whitly, we know you've corresponded with a man named Robert Quarles," Malcolm said evenly. "Can we see his letters?"

Martin thought about it. "Doesn't ring a bell," he said.