O’Kelly gave us a filthy look and decided to take our silence for acquiescence. “Right. Where are we on Donnelly?”
“I’d say we’re doing well,” Sam said, when it became clear that neither of us was going to say anything. “Full confession, including details that weren’t released, and a fair bit of forensic evidence. I’d say his only chance of getting off would be to plead insanity—and that’s what he’ll do, if he gets a good lawyer. Just now he’s feeling so bad about it, he wants to plead guilty, but that’ll wear off after a few days in jail.”
“That insanity shite shouldn’t be allowed,” O’Kelly said bitterly. “Some eejit getting up on the stand and saying, ‘It’s not his fault, Your Honor, his mammy toilet-trained him too early so he couldn’t help killing that wee girl….’ It’s a load of my arse. He’s no more insane than I am. Get one of ours to examine him and say so.” Sam nodded and made a note.
O’Kelly flipped through his papers and waved a report at us. “Now. What’s all this about the sister?”
The air in the room tightened. “Rosalind Devlin,” Cassie said, raising her head. “She and Damien were seeing each other. From what he says, the murder was her idea; she pressured him into it.”
“Yeah, right. Why?”
“According to Damien,” Cassie said evenly, “Rosalind told him that Jonathan Devlin was sexually abusing all three of his daughters, and physically abusing Rosalind and Jessica. Katy, who was his favorite, encouraged and often incited the abuse against the other two. Rosalind said that if Katy was eliminated, the abuse would stop.”
“Any evidence backing this up?”
“On the contrary. Damien says Rosalind told him Devlin had fractured her skull and broken Jessica’s arm, but there’s nothing like that on their medical records—nothing that indicates any kind of abuse, in fact. And Katy, after supposedly having regular sexual intercourse with her father for years, died virgo intacta.”
“So why are you wasting our time on this bullshit?” O’Kelly slapped the report. “We’ve got our man, Maddox. Go home and let the lawyers sort out the rest.”
“Because it’s Rosalind’s bullshit, not Damien’s,” Cassie said, and for the first time there was a faint spark in her voice. “Someone made Katy sick for years; that wasn’t Damien. The first time she was about to go off to ballet school, long before Damien knew she existed, someone made her so sick she had to turn down the place. Someone put it into Damien’s head to kill a girl he’d barely seen—you said it yourself, sir, he’s not insane: he didn’t hear little voices telling him to do it. Rosalind’s the only person who fits.”
“What’s her motive?”
“She couldn’t stand the fact that Katy was getting all the attention and admiration. Sir, I’d put a lot of money on this. I think that years ago, as soon as she realized Katy had a serious talent for ballet, Rosalind started poisoning her. It’s horribly easy to do: bleach, emetics, plain table salt—your average household has several dozen things that can give a little girl some mysterious gastric disorder, if you can just convince her to take them. Maybe you tell her it’s a secret medicine, it’ll make her better; and if she’s only eight or nine, and you’re her big sister, she’ll probably believe you…. But when Katy got her second chance at ballet school, she stopped being convinced. She was twelve now, old enough to start questioning what she was told. She refused to take the stuff any more. That—topped off by the newspaper article and the fund-raiser and the fact that Katy was becoming Knocknaree’s main celebrity—was the last straw: she had actually dared to defy Rosalind outright, and Rosalind wasn’t going to allow that. When she met Damien, she saw her chance. The poor little bastard is a born patsy; he’s not all that bright, and he’d do anything to make someone happy. She spent the next few months using sex, sob stories, flattery, guilt trips, everything at her disposal, to persuade him that he had to kill Katy. And finally, by last month, she had him so dazed and hyped up that he felt like he didn’t have any other choice. Actually, he probably was a little insane by that time.”
“Don’t be saying that outside this room,” O’Kelly said sharply and automatically. Cassie moved, something like a shrug, and went back to her drawing.
A silence fell over the room. The story was a hideous one in itself, ancient as Cain and Abel but with all its own brand-new jagged edges, and it is impossible for me to describe the mixture of emotions with which I had heard Cassie tell it. I had been looking not at her but at our frail silhouettes in the window, but there was no way to avoid listening. She has a very beautiful speaking voice, Cassie, low and flexible and woodwind; but the words she said seemed to crawl hissing up the walls, spin sticky dark trails of shadow across the lights, nest in tangled webs in the high corners.
“Got any evidence?” O’Kelly demanded, finally. “Or are you just going on Donnelly’s word?”
“No hard evidence, no,” Cassie said. “We can prove the connection between Damien and Rosalind—we’ve got calls between their mobiles—and they both gave us the same fake lead about some nonexistent guy in a tracksuit, which means she was an accessory after the fact, but there’s no proof that she even knew about the murder beforehand.”
“Of course there isn’t,” he said flatly. “Why did I ask. Are you all three on board with this? Or is this just Maddox’s personal little crusade?”
“I’m with Detective Maddox, sir,” Sam said firmly and promptly. “I’ve been interrogating Donnelly all day, and I think he’s telling the truth.”
O’Kelly sighed, exasperated, and jerked his chin at me. Obviously he felt Cassie and Sam were being gratuitously difficult, he just wanted to finish Damien’s paperwork and declare this case closed; but in spite of his best efforts he is not a despot at heart, and he wouldn’t override his team’s unanimous opinion. I felt for him, really: I was presumably the last person he wanted to look to for support.
Finally—somehow I couldn’t bear to say it out loud—I nodded. “Brilliant,” O’Kelly said wearily. “That’s just brilliant. All right. Donnelly’s story’s barely enough for us to charge her, never mind convict her. We need to get a confession. What age is she?”
“Eighteen,” I said. I hadn’t spoken in so long that my voice came out as a startled croak; I cleared my throat. “Eighteen.”
“Thank Christ for small mercies. At least we don’t have to have the parents there when we interrogate her. Right: O’Neill and Maddox, pull her in, go at her as hard as you can, scare the bejasus out of her till she cracks.”
“Won’t work,” Cassie said, adding another branch to the tree. “Psychopaths have very low anxiety levels. You’d have to stick a gun to her head to scare her that badly.”
“Psychopaths?” I said, after a startled instant.
“Jesus, Maddox,” O’Kelly said, annoyed. “Less of the Hollywood. She didn’t eat the sister.”
Cassie glanced up from her doodle, her eyebrows lifting into cool, delicate arcs. “I wasn’t talking about movie psychos. She fits the clinical definition. No conscience, no empathy, pathological liar, manipulative, charming, intuitive, attention-seeking, easily bored, narcissistic, turns very nasty when she’s thwarted in any way…I’m sure I’m forgetting a few of the criteria, but does that sound about right?”
“That’s enough to be going on with,” Sam said dryly. “Hang on; so even if we go to trial, she’ll get off on insanity?” O’Kelly mumbled something disgusted, no doubt to do with psychology in general and Cassie in particular.
“She’s perfectly sane,” Cassie said crisply. “Any psychiatrist will say so. It’s not a mental illness.”
“How long have you known this?” I asked.
Her eyes flicked to me. “I started wondering the first time we met her. It didn’t seem relevant to the case: the killer clearly wasn’t a psychopath, and she had a perfect alibi. I considered telling you anyway, but do you really think you would have believed me?”
You should have trusted me, I almost said. I saw Sam look back and forth between us, perplexed and unsettled.
“Anyway,” Cassie said, going back to her sketching, “there’s no point in trying to scare a confession out of her. Psychopaths don’t really do fear; mainly just aggression, boredom or pleasure.”
“OK,” Sam said. “Fair enough. Then what about the other sister—Jessica, is it? Would she know anything?”
“Quite possibly,” I said. “They’re close.” One corner of Cassie’s mouth went up wryly at the word I had chosen.
“Ah, Jesus,” O’Kelly said. “She’s twelve, am I right? That means the parents.”
“Actually,” Cassie said, not looking up, “I doubt talking to Jessica would be any use either. She’s completely under Rosalind’s control. Whatever Rosalind’s done to her, she’s so punch-drunk that she can hardly think for herself. If we find a way to charge Rosalind, yeah, we might get something out of Jessica sooner or later; but as long as Rosalind’s in that house, she’ll be too terrified of saying something wrong to say anything at all.”
O’Kelly lost patience. He hates being baffled, and the charged, crisscrossing tensions in the room must have been setting his teeth on edge just as badly as the case itself. “That’s great, Maddox. Thanks for that. So what the hell do you suggest? Come on; let’s hear you come up with something useful, instead of sitting there shooting down everyone else’s ideas.”
Cassie stopped drawing and carefully balanced her pen across one finger. “OK,” she said. “Psychopaths get their kicks by having power over other people—manipulating them, inflicting pain. I think we should try playing to that. Give her all the power she can eat, and see if she gets carried away.”
“What are you talking about?”
“Last night,” Cassie said slowly, “Rosalind accused me of sleeping with Detective Ryan.”
Sam’s head turned sharply towards me. I kept my eyes on O’Kelly. “Oh, I hadn’t forgotten, believe me,” he said heavily. “And it bloody well better not be true. You two are both in deep enough shite already.”
“No,” Cassie said, a trifle wearily, “it’s not true. She was just trying to distract me and hoping she would hit a nerve. She didn’t, but she doesn’t know that for sure; I could just have been covering very well.”
“So?” O’Kelly demanded.
“So,” Cassie said, “I could go talk to her, admit that Detective Ryan and I have a longstanding affair, and beg her not to turn us in—maybe tell her we suspect she was involved in Katy’s death and offer to tell her how much we know in exchange for her silence, something like that.”
O’Kelly snorted. “And what, you think she’ll just spill her guts?”
She shrugged. “I don’t see why not. Yeah, most people hate to admit they’ve done something terrible, even if they won’t get in trouble for it; but that’s because they feel bad about it, and because they don’t want other people to think less of them. To this girl, other people aren’t real, any more than characters in a video game, and right and wrong are just words. It’s not like she feels any guilt or remorse or anything about having Damien kill Katy. In fact, I’m willing to bet she’s over the moon with herself. This is her greatest achievement yet, and she hasn’t been able to brag to anyone about it. If she’s sure she has the upper hand, and she’s sure I’m not wearing a wire—and would I wear a wire to admit to sleeping with my partner?—I think she’ll jump at the chance. The thought of telling a detective exactly what she did, knowing there’s not a thing I can do about it, knowing it must be killing me…. It’ll be one of the most delicious buzzes of her life. She won’t be able to resist.”
“She can say whatever she bloody well likes,” O’Kelly said. “Without a caution, none of it will be admissible.”
“So I’ll caution her.”
“And you think she’ll keep talking? I thought you said the girl’s not crazy.”
“I don’t know,” Cassie said. She sounded, just for a second, exhausted and openly pissed off, and it made her seem very young, like a teenager unable to conceal her frustration with the idiotic adult world. “I just think it’s our best shot. If we go for a formal interview, she’ll be on her guard, she’ll sit there and deny everything, and we’ll have blown our shot: she’ll go home knowing there’s no way we can pin anything on her. This way, at least there’s a chance she’ll figure I can’t prove anything and take the risk of talking.”
O’Kelly was grating a thumbnail, monotonously and infuriatingly, over the fake-wood grain of the table; he was obviously thinking about it. “If we do it, you wear a wire. I’m not risking this on your word against hers.”
“I wouldn’t have it any other way,” Cassie said coolly.