Sachs explained about the perp’s theft of the chapter about the Bone Collector – and the fact that he’d been carrying it around with him during the crime. She added too that there was no direct connection with the Bone Collector case but that he’d probably gone to some trouble to obtain a copy of the book.

Lon Sellitto added, ‘And he left a message.’ He explained about the tattooed phrase ‘the second’ in Old English type.

The doctor was silent for a moment. Then: ‘Well, the first thing that I thought of, which you obviously have too, is that he’s a serial doer. A partial message means there’re more to come. And then his interest in the Bone Collector, who was a serial kidnapper.’

‘We assume he’s going to keep hunting,’ Sellitto said.

‘Do you have any leads at all?’

Sachs said, ‘Description – white male, slim. Some details on the poisons he used and one that he probably intends to.’

‘And the victim’s white female?’

‘Yes.’

‘Fits the serial killer model.’ Most such killers hunted in the same racial pool as their own.

Sachs continued, ‘He subdued her with propofol. So maybe he’s got a medical background.’

‘Like the Bone Collector,’ Dobyns said.

‘Right,’ Rhyme said, eyes shifting from the evidence to the speaker phone. ‘I hadn’t thought about that.’ His attention to the psychiatrist now edged over the 50 percent mark.

‘Sexual component?’

‘No,’ Sellitto said.

Sachs added, ‘It took her some time to die. Presumably he was there, watching. And possibly enjoying it.’

‘Sadistic,’ Ron Pulaski said.

‘Who’s that?’ Dobyns asked.

‘It’s Ron Pulaski, Patrol. I work with Lincoln and Amelia.’

‘Hello, Officer. Well, no, actually I don’t see sadism. That occurs only in a sexual context. If he enjoys inflicting pain for its own sake his condition would probably be diagnosed as anti-social personality disorder.’

‘Yessir.’ Pulaski was blushing, not from the correction but, it seemed, because of Rhyme’s glare at the interruption.

Dobyns said, ‘Off the top of my head, he’s an organized offender and he’ll be planning out the attacks carefully. I’d also say there’re two possible reasons for your unsub’s interest in the Bone Collector and in you, Lincoln. Amelia too, don’t forget. One, he might have been affected by the Bone Collector’s crimes a decade ago. Emotionally moved by them, I mean.’

‘Even if he had no direct connection?’ Rhyme asked, forgetting he was trying to ignore the doctor’s input.

‘Yes. You don’t know his age exactly but it’s possible he was in early adolescence then – just the time when a news story about a serial doer might’ve spoken to him. As for that message? Well, the Bone Collector was, if I remember, all about revenge.’

‘That’s right.’

Sellitto asked, ‘What kind of revenge would our unsub be after, Doc? Family members who’d died? Some other personal loss?’