“I went too far,” he said. “It’s my fault, after all! I recognise that.” He had not met 77 serial killers, he acknowledged, but rather about 30, and some of them only briefly. Still, 30 struck him as a reasonably impressive total, all things considered. “My accomplishments might have been enough on their own, without my additions,” he reflected. He had had himself psychoanalysed; the trouble was, of course, with his parents. He had also begun a census of all known French serial killers, and was in the midst of expanding his book on Kemper. “I love to write!” he told me.