The nameless narrator first appears to fit the stereotype of a meticulous killer untroubled by normal emotions. He researched 18-year-old Sarah Abbott, who was taking a year off from school before heading to Oxford, killed her in her house, and carefully cleaned up afterward. On returning to his van, however, he discovers that he has locked its keys inside. A brick through the van's window solves that problem, but later, back at the victim's house,...