we know he did the legwork needed to come up with these new names. He didn't just give me four names. He went through the motions.”

“Of course he would do that. He would keep up the appearance of normal routine life whether he knew he was being followed or not. He would already know these names, you understand, but he would still go out and get them by doing the routine legwork. It's one of the signs of how smart he—”

He stopped, put his hands in his pockets and frowned while seemingly staring at the floor between his feet.

“You said six new names plus the first two?”

“Right.”

“Eight kills in almost five years. Any chance there are others?”

“I was going to ask you that. This information comes from the suspect. Would he lie? Would he tell us less, give us fewer names than there actually were to screw with us, to mess up the investigation?”

“Ah.” He continued pacing but didn't continue speaking for a half minute. “My gut instinct is to say no. No, he would not screw with you, as you say. He would do his job in earnest. I think if all he has given you are five new names, then that's all there are. You have to remember that this man thinks he is superior to you, the police, in every aspect. It would not be unusual for him to be perfectly honest with you about some aspects of the case.”

“We have a rough idea of the times. The times of the killings. What it looks like is that he slowed his pace after the Dollmaker was killed. When he started hiding them, burying them, because he couldn't blend in any longer with the Dollmaker, the intervals lengthened. It looks like he went from less than two months between kills during the Dollmaker period to seven months. Maybe even longer. The last disappearance was almost eight months ago.”

Locke looked up from the floor at Bosch.

“And all this recent activity,” he said. “The trial in the papers. His sending the note. His involvement as a detective in the case. The high activity will speed the end of the cycle. Don't lose him, Harry. It could be time.”

He turned and looked at the calendar that hung on the wall next to the door. There was some kind of maze-like design above the chart of the month's days. Locke started laughing. Bosch didn't get it.

“What?” he asked.

“Jeez, this weekend is a full moon, too.” He spun around to look at Bosch. “Can you take me on the surveillance?”

“What?”

“Take me along. It would be the rarest of opportunities in the field of psychosexual studies. To observe the stalking pattern of a sexual sadist as it is actually taking place. Unbelievable. Harry, this could get me a grant from Hopkins. It could … it could”—his eyes lit up as he looked at the casement window—”get me out of this fucking dungeon!”

Bosch stood up. He was thinking he had made a mistake. Locke's vision of his own future was obscuring everything else. He had come for help, not to make Locke shrink of the year.

“Look, we're talking about a killer here. Real people. Real blood. I'm not going to do anything that might compromise the investigation. A surveillance is a delicate operation. When you add that it is a cop we are watching, then it makes it even harder. I can't bring you along. Don't even ask. I can tell you things here and fill you in whenever I can but there is no way I or my commander on this would approve bringing a civilian along for the ride.”

Locke's eyes dropped and he looked like a chastised boy. He took a quick glance at the window again and walked around behind the desk. He sat down and his shoulders dropped.

“Yes, of course,” he said quietly. “I completely understand, Harry. I got carried away there. The important thing is that we stop this man. We'll worry about studying him later. Now, a seven-month cycle. Wow, that's impressive.”

Bosch flicked his ashes and sat back down.

“Well, we don't know for sure, considering the source. There still could be others.”

“I doubt it.”

Locke pinched the bridge of his nose and leaned back in his chair. He closed his eyes. He did not move for several seconds.

“Harry, I'm not sleeping. Just concentrating. Just thinking.”

Bosch watched him for a few moments. It was weird. He then noticed that lined on a shelf just above Locke's head were the books the