But the NOMURS victims have ranged widely in age, physical type, occupation, social status, and place of residence. The only similarities are that they’re white, male, over forty, and have families. These four facts combined exclude them from the known target profiles for serial killers. Moreover, none of the victims is known to have had habits that might draw a predator to an atypical target. No victim was gay or had a known sexual paraphilia. None was ever arrested for a sexual crime, reported for child abuse, or known to frequent strip clubs or other sleazy establishments. For this reason the NOMURS task force has made no progress at all in finding a suspect.

As I slow the Audi to read a house number, my skin itches with fear and anticipation. The killer was on this street only hours ago. He may be here now, watching the progress of the investigation, as serial murderers often do. Watching me. And herein lies the thrill. A predator is not prey. When you hunt a predator, you place yourself in a position to be hunted yourself. There’s no other way. If you follow a lion into a thicket, you step within reach of his claws. And my adversary is no lion. He’s the deadliest creature in the world: a human male driven by anger and lust, yet governed-at least temporarily-by logic. He stalks these streets with impunity, confident in his prowess, meticulous in his planning, arrogant in his execution. The only thing I know about him is this: like all his brothers before him, he will kill again, and again, until someone unravels the riddle of his psyche or he self-destructs from the intensity of conflict in his own mind. A lot of people don’t care which way it ends, so long as it ends soon.

I do.

Sean is standing on the sidewalk, waiting. He’s walked a block up from the victim’s house to meet me. He always did have guts. But does he have enough to face our present situation?

I park behind a Toyota Land Cruiser, get out, and start to unload my cases.