Suddenly Cassie's head went up; her gaze moved past me, over my shoulder. "Look," she said.
I turned. Jonathan Devlin was coming across the courtyard, his shoulders set forward and his hands deep in the pockets of his big brown overcoat. The high, arrogant lines of the surrounding buildings should have dwarfed him, but instead they seemed to me to align themselves around him, swooping into strange geometries with him at their crux, imbuing him with some impenetrable significance. He hadn't seen us. His head was down and the sun, low over the gardens, was in his face; to him we would have been only hazy silhouettes, suspended in a bright nimbus like the carved saints and gargoyles. Behind him his shadow fluttered long and black across the cobblestones.
He passed directly beneath us, and we watched his back as he trudged towards the door. "Well," I said. I mashed out my cigarette. "I think that's our cue."
I got up and held out a hand to pull Cassie to her feet, but she didn't move. Her eyes on mine were suddenly sober, intent, questioning.
"What?" I said.
"You shouldn't be doing this interview."
I didn't answer. I didn't move, just stood there on the bridge with my hand held out to her. After a moment she shook her head wryly and the expression that had startled me disappeared, and she caught my hand and let me pull her up.
We brought him into the interview room. When he saw the wall his eyes widened sharply, but he said nothing. "Detectives Maddox and Ryan interviewing Jonathan Michael Devlin," Cassie said, riffling through one of the boxes and coming up with an overstuffed file. "You are not obliged to say anything unless you wish to do so, but anything you do say will be taken down in writing and may be used in evidence. OK?"
"Am I under arrest?" Jonathan demanded. He hadn't moved from the door. "For what?"
"What?" I said, puzzled. "Oh, the caution…God, no. That's routine. We just want to update you on the investigation's progress, and see if you can help us move things forward another step."
"If you were under arrest," Cassie said, dumping the file on the table, "you'd know all about it. What did you think you might be under arrest for?"
Jonathan shrugged. She smiled at him and pulled out a chair, facing the scary wall. "Have a seat." After a moment, he slowly took off his coat and sat down.
I took him through the update. I was the one he had trusted with his story, and that trust was a small close-range weapon that I didn't intend to detonate until the right moment. For now, I was his ally. I was, to a large extent, honest with him. I told him about the leads we had followed up, the tests the lab had run. I listed for him, one by one, the suspects we had identified and eliminated: the locals who thought he was stopping progress, the pedophiles and confession junkies and Tracksuit Shadows, the guy who thought Katy's leotard was immodest; Sandra. I could feel the frail, mute army of photographs ranged behind me, waiting. Jonathan did well, he kept his eyes on mine almost all the time; but I could see the effort of will that went into it.
"So what you're telling me is that you're getting nowhere," he said eventually, heavily. He looked terribly tired.
"God, no," Cassie said. She had been sitting at the corner of the table, chin propped on one palm, watching in silence. "Not at all. What Detective Ryan is telling you is that we've come a long way, these last few weeks. We've done a lot of eliminating. And here's what we've got left." She inclined her head towards the wall; he didn't take his eyes off her face. "We've got evidence that your daughter's murderer is a local man with intimate knowledge of the Knocknaree area. We've got forensic evidence linking her death to the 1984 disappearances of Peter Savage and Germaine Rowan, which indicates that the murderer is probably aged at least thirty-five and has had strong ties to the area for over twenty years. And a lot of the men fitting that description have alibis, so that narrows it down even further."
"We also have evidence," I said, "to suggest that this isn't some thrill killer. This man isn't killing at random. He's doing it because he feels he has no choice."
"So you think he's insane," Jonathan said. His mouth twisted. "Some lunatic-"
"Not necessarily," I said. "I'm just saying that sometimes situations get out of hand. Sometimes they end in tragedies that nobody really wanted to happen."
"So you see, Mr. Devlin, that narrows it down again: we're looking for someone who knew all three children and had motive to want them dead," Cassie said. She was tilting her chair back, hands behind her head, her eyes steady on his. "We're going to get this guy. We're getting closer every day. So if there's anything you want to tell us-anything at all, about either case-this is the time to do it."
Jonathan didn't answer immediately. The room was very quiet, only the soft drone of the fluorescent bars overhead and the slow, monotonous creak of Cassie rocking her chair on its back legs. Jonathan's eyes fell away from hers and moved past her, across the photographs: Katy suspended in that impossible arabesque, Katy laughing on a blurry green lawn with her hair blown sideways and a sandwich in her hands, Katy with one eye a slit open and blood crusted dark on her lip. The bare, simple pain on his face was almost indecent. I had to force myself not to look away.
The silence stretched tighter. Almost imperceptibly, something I recognized was happening to Jonathan. There's a specific crumbling in the mouth and spine, a sagging as though the underlying musculature is dissolving to water, that every detective knows: it belongs to the instant before a suspect confesses, as he finally and almost with relief lets his defenses fall away. Cassie had stopped rocking her chair. My pulse was running high in my throat, and I felt the photographs behind me catch tiny swift breaths and hold them, poised to swoop off the paper and down the corridor and out into the dark evening, freed, if only he gave the word.
Jonathan wiped a hand hard across his mouth and folded his arms and looked back at Cassie. "No," he said. "There's nothing."
Cassie and I let out our breath in unison. I had known, really, that it was too much to hope for, so soon, and-after that first sinking second-I hardly cared; because now, at last, I was sure that Jonathan knew something. He had as good as told us so.
This actually came as something of a shock. The whole case had been so crowded with possibilities and hypotheticals ("OK. So say just for a second that Mark did do it, right, and the illness and the old case aren't related after all, and say Mel's telling the truth: who could he have got to dump the body?") that certainty had started to seem unimaginable, some remote childhood dream. I felt as if I had been moving among empty dresses hung in some dim attic and had suddenly bumped smack into a human body, warm and solid and alive.
Cassie eased the front legs of her chair to the floor. "OK," she said, "OK. Let's go back to the beginning. The rape of Sandra Scully. When did that happen, exactly?"
Jonathan's head turned sharply towards me. "You're all right," I told him, in an undertone. "Statute of limitations." In fact, we still hadn't bothered to check this, but it was moot: there was no chance we would ever be able to charge him, anyway.
He gave me a long, wary look. "Summer of '84," he said, finally. "I wouldn't know the date."