The day before, they had spent six hours in a room with Victor Matarese discussing the 1996 murder of a prostitute named Charisse Witherspoon. DNA that had been extracted from semen found in the victim’s throat and stored for ten years had been matched to Matarese. It was a cold hit. His DNA profile had been banked by the DOJ in 2002 after a forcible rape conviction. It had taken another four years before Bosch and Rider came along and reopened the Witherspoon case, pulled the DNA and sent it to the state lab on a blind run.

It was a case initially made in the lab. But because Charisse Witherspoon had been an active prostitute the DNA match was not an automatic slam dunk. The DNA could have come from someone who was with her before her killer turned up and hit her repeatedly on the head with a two-by-four.

So the case didn’t come down to the science. It came down to the room and what they could get from Matarese. At 8 a.m. they woke him up at the halfway house where he had been placed upon his parole in the rape case and took him to Parker Center. The first five hours in the interview room were grueling. In the sixth he finally broke and gave it all up, admitting to killing Witherspoon and throwing in three more, all prostitutes he had murdered in South Florida before coming to L.A.

When Bosch heard his name called out for line one, he thought it was going to be Miami calling him back. It wasn’t.

“Bosch,” he said after grabbing the phone.

“Freddy Olivas. Northeast Division Homicide. I’m over in Archives looking for a file and they say you’ve already got it signed out.”

Bosch was silent a moment while his mind dropped out of the Matarese case. Bosch didn’t know Olivas but the name sounded familiar. He just couldn’t place it. As far as signed-out files went, it was his job to review old cases and look for ways to use forensic advances to solve them. At any given time he and Rider could have as many as twenty-five files from Archives.