'We grow our own birdseed here,' Dr Ensor explained. 'The patients are encouraged to raise and sell it. Of course, we're not talking mass production here. There's barely enough for our own birds, and as you can see by what's in some of the cages and on the floor, the patients tend to be fond of feeding their pets cheese puffs and potato chips.'

'Carrie was up here every day?' I asked.

'So I've been told, now that I've been looking into everything she did while she was here.' She paused, looking around the cages as small animals with pink noses twitched and scratched.

'Obviously I didn't know everything at the time. For example, coincidentally, during the six months Carrie supervised the pet program, we had an unusual number of fatalities and inexplicable escapes. A parakeet here, a hamster there. Patients would come in and find their wards dead in their cages, or a cage door open and a bird nowhere to be found.'

She walked back out into the hallway, her lips firmly pressed.

'It's too bad you weren't here on those occasions,' she said wryly. 'Perhaps you could have told me what they were dying from. Or who.'

There was another door down the hall, and this one opened onto a small, dimly lit room where there was one relatively modern computer and printer on a plain wooden table. I also noted a phone jack in the wall. A sense of foreshadowing darkened my thoughts even before Dr Ensor spoke.

'This was perhaps where Carrie spent most of her free time,' she said. 'As you no doubt know, she has an extensive background in computers. She was extremely good about encouraging other patients to learn, and the PC was her idea. She suggested we find donors of used equipment, and we now have one computer and printer on each floor.'

I walked over to the terminal and sat down in front of it. Hitting a key, I turned off the screen saver and looked at icons that told me what programs were available.

'When patients worked in here,' I said, 'were they supervised?'

'No. They were shown in and the door was shut and locked. An hour later, they were shown back to their ward.' She grew thoughtful. 'I'd be the first to admit that I was impressed with how many of the patients have started learning word processing, and in some instances, spread sheets.'

I went into America Online and was prompted for a username and password. The director watched what I was doing.

'They absolutely had no access to the Internet,' she said.

'How do we know that?'

'The computers aren't hooked up to it.'

'But they do have modems,' I said. 'Or at least this one does. It's simply not connecting because there's no telephone line plugged into the telephone jack.'

I pointed to the tiny receptacle in the wall, then turned around to face her.

'Any chance a telephone line might have disappeared from somewhere?' I asked. 'Perhaps from one of the offices? Susan Blaustein's office, for example?'

The director glanced away, her face angry and distressed as she began to see what I was getting at.

'God,' she muttered.

'Of course, she may have gotten that from the outside. Perhaps from whoever delivered her snacks from the store?'

'I don't know.'

'The point is, there's a lot we don't know, Dr Ensor. We don't know, for example, what the hell Carrie was really doing when she was in here. She could have been in and out of chat rooms, putting feelers out in personals, finding pen pals. I'm sure you've kept up with the news enough to know how many crimes are committed on the Internet? Pedophilia, rape, homicide, child pornography.'

'That's why this was closely supervised,' she said. 'Or supposed to have been.'

'Carrie could have planned her escape this way. And you say she started working with the computer how long ago?'

'About a year. After a long run of ideal behavior.'

'Ideal behavior,' I repeated.

I thought of the cases in Baltimore, Venice Beach, and more recently in Warrenton. I wondered if it were possible that Carrie might have met up with her accomplice through e-mail, through a Web site or a chat room. Could it be that she committed computer crimes during her incarceration? Might she have been working behind the scenes, advising and encouraging a psychopath who stole human faces? Then she escaped, and from that point on her crimes were in person.

'Is there anyone who's been discharged from Kirby in the past year who was an arsonist, especially someone with a history of homicide? Anyone Carrie might have come to know? Perhaps someone in one of her classes?' I asked, just to be sure.

Dr Ensor turned off the overhead light and we returned to the hall.

'No one comes to mind,' she said. 'Not of the sort you're talking about. I will add that a peace officer was always present.'

'And male and female patients did not mix during recreational times.'

'No. Never. Men and women are completely segregated.'

Although I did not know for a fact that Carrie had a male accomplice, I suspected it, and I recalled what Benton had written in his notes at the end, about a white male between the ages of twenty-eight and forty-five. Peace officers, who were simply guards not wearing guns, might have insured that order was maintained in the classrooms, but I doubted seriously they would have had any idea that Carrie was making contact on the Internet. We boarded the elevator again, this time getting off on the third floor.

'The women's ward,' Dr Ensor explained. 'We have twenty-six female patients at the moment, out of one hundred and seventy patients overall. That's the visitors' room.'

She pointed through glass at a spacious open area with comfortable chairs and televisions. No one was in there now.

'Did she ever have visitors?' I asked as we kept walking.

'Not from the outside, not once. Inspiring more sympathy for her, I suppose.' She smiled bitterly. 'The women actually stay in there.'

She pointed out another area, this one arranged with single beds.

'She slept over there by the window,' Dr Ensor said.

I retrieved Carrie's letter from my pocketbook and read it again, stopping at the fifth paragraph:

LUCY-BOO on TV. Fly through window. Come with we. Under covers. Come til dawn. Laugh and sing. Same ole song. LUCY LUCY LUCY and we!

Suddenly I thought about the videotape of Kellie Shephard, and of the actress in Venice Beach who played bit parts on television shows. I thought of photo shoots and production crews, becoming more convinced that there was a connection. But what did Lucy have to do with any of this? Why would Carrie see Lucy on TV? Or was it simply that she somehow knew that Lucy could fly, could fly helicopters?

There was a commotion around a corner, and female peace officers were herding the women patients in from recreation. They were sweating and loud, with tormented faces, and one was being escorted in a preventive aggressive device, or a PAD, which was a politically correct term for a restraint that chained wrists and ankles to a thick leather strap about the waist. She was young and white, with eyes that scattered when they fixed on me, her mouth bowed in a simpering smile. With her bleached hair and pale androgynous body, she could have been Carrie, and for a moment, in my imagination, she was. My flesh crawled as those irises seemed to swirl, sucking me in, while patients jostled past us, several making it a point to bump into me.

'You a lawyer?' an obese black woman almost spat as her eyes smoldered on me.

'Yes,' I said, unflinching as I stared back, for I had learned long ago not to be intimidated by people who hate.

'Come on.' The director pulled me along. 'I'd forgotten they were due up at this time. I apologize.'

But I was glad it had happened. In a sense, I had looked Carrie in the eye and had not turned away.

'Tell me exactly what happened the night she disappeared, please,' I said.