“—’God,’” she completed the quotation. “Okay, then—there were plenty of footprints at the scene. Remember, it was trampled. Some of those might’ve been the overall man’s.”

“There are no other prints on the murder weapon.”

“He claims the man wore gloves,” she countered.

“But no leather grain prints either.”

“Could’ve been cloth. Let me test it and—”

“‘Could have, could have….’ Come on, Sachs, this is pure speculation.”

“But you should’ve heard him when he was talking about Mary Beth. He was concerned about her.”

“He was acting. What’s my number one rule?”

“You have a lot of number one rules,” she muttered.

He continued unfazed, “You can’t trust witnesses.”

“He thinks he loves her, he cares for her. He really believes he’s protecting her.”

A man’s voice interrupted. “Oh, he is protecting her.” Sachs and Rhyme looked to the doorway. It was Dr. Elliott Penny. He added, “Protecting her from himself.”

Sachs introduced them.

“I wanted to meet you, Lincoln,” Dr. Penny said. “I specialize in forensic psychology. Bert Markham and I were on a panel together at the AALEO last year and he speaks highly of you.”

“Bert’s a good friend,” Rhyme said. “Just appointed head of Chicago PD Forensics.”

Dr. Penny nodded toward the corridor. “Garrett’s lawyer’s in there with the D.A. right now but I don’t think the outcome’s going to be very good for the boy.”

“What did you mean just then, about protecting her from himself?” Sachs asked cynically. “Some kind of multiple personality crap?”

“No,” replied the doctor, not at all troubled by her abrasive skepticism. “There’s definitely some mental or emotion disturbance at work but it’s nothing as exotic as multiple personalities. Garrett knows exactly what he did to Mary Beth and Billy Stail. I’m pretty sure he’s hidden her someplace to keep her away from Blackwater Landing, where he probably did kill those other people over the past couple of years. And scared—what was his name?—the Wilkes boy into killing himself. I think he was planning to rape and kill Mary Beth at the same time he killed Billy but that the part of him that quote loves her wouldn’t let him. He got her away from Blackwater Landing as fast as he could to keep from hurting her. I think he did rape her, though to him it’s not rape, just the consummation of what he sees as their quote relationship. As normal to him as a husband and wife on their honeymoon. But he still felt the urge to kill her and so he went back to Blackwater Landing the next day and got a substitute victim, Lydia Johansson. He was undoubtedly going to murder her in place of Mary Beth.”

“I hope you’re not billing the defense,” Sachs said acerbically, “if that’s your sympathetic testimony.”