She was medium height, built like me, compact and boyish. Her head was turned away from us, towards the far wall, and all I could see in the dim light was short black curls and a slice of white: high round curve of a cheekbone, the point of a small chin. “Here,” Frank said. He flicked on a tiny, powerful torch and caught her face in a sharp little halo.

For a second I was confused-Sam lied?-because I knew her from somewhere, I’d seen that face a million times before. Then I took a step forwards, so I could get a proper look and the whole world went silent, frozen, darkness roaring in from the edges and only the girl’s face blazing white at the center; because it was me. The tilt of the nose, the wide sweep of the eyebrows, every tiniest curve and angle clear as ice: it was me, blue-lipped and still, with shadows like dark bruises under my eyes. I couldn’t feel my hands, my feet, couldn’t feel myself breathing. For a second I thought I was floating, sliced off myself and wind currents carrying me away.

“Know her?” Frank asked, somewhere. “Any relation?”

It was like going blind; my eyes couldn’t take her in. She was impossible: a high-fever hallucination, a screaming crack straight across all the laws of nature. I realized I was braced rigid on the balls of my feet, one hand halfway to my gun, every muscle ready to fight this dead girl to the death. “No,” I said. My voice sounded wrong, somewhere outside me. “Never seen her.”

“You adopted?”

Sam whipped his head around, startled, but the bluntness was good, it helped like a pinch. “No,” I said. For an awful, rocking instant I actually wondered. But I’ve seen photos, my mother tired and smiling in a hospital bed, brand-new me at her breast. No.

“Which side do you look like?”

“What?” It took me a second. I couldn’t look away from the girl; I had to force myself to blink. No wonder Doherty and his ears had done a double take. “No. My mother’s side. It’s not that my father was running around, and this is… No.”

Frank shrugged. “Worth a shot.”

“They say everyone’s got a double, somewhere,” Sam said quietly, beside me. He was too close; it took me a second to realize that he was ready to catch me, just in case.

I am not the fainting type. I bit down, hard and fast, on the inside of my lip; the jolt of pain cleared my head. “Doesn’t she have ID?”

I knew, from the tiny pause before either of them answered, that something was up. Shit, I thought, with a new thump in my stomach: identity theft. I wasn’t too clear on how it worked exactly, but one glimpse of me and a creative streak and presumably this girl could have been sharing my passport and buying BMWs on my credit.

“She had a student card on her,” Frank said. “Key ring in the left-hand pocket of her coat, Maglite in the right, wallet in the front right pocket of her jeans. Twelve quid and change, an ATM card, a couple of old receipts and this.” He fished a clear plastic evidence bag out of a pile by the door and slapped it into my hand.

It was a Trinity College ID, slick and digitized, not like the laminated bits of colored paper we used to have. The girl in the photo looked ten years younger than the white, sunken face in the corner. She was smiling my own smile up at me and wearing a striped baker-boy cap turned sideways, and for a second my mind flailed wildly: But I never had a striped one of those, did I, when did I-I pretended to tilt the card to the light, reading the small print, so I could turn my shoulder to the others. Madison, Alexandra J.

For a whirling instant, I understood completely: Frank and I had done this. We made Lexie Madison bone by bone and fiber by fiber, we baptized her and for a few months we gave her a face and a body, and when we threw her away she wanted more. She spent four years spinning herself back, out of dark earth and night winds, and then she called us here to see what we had done.

“What the hell,” I said, when I could breathe.

“When the uniforms called it in and ran her name through the computer,” Frank said, taking back the bag, “she came up flagged: anything happens to this girl, call me ASAP. I never bothered taking her out of the system; I figured we might need her again, sooner or later. You never know.”

“Yeah,” I said. “No kidding.” I stared hard at the body and got a grip: this was no golem, this was a real live dead girl, oxymoron and all. “Sam,” I said. “What’ve we got?”

Sam shot me a quick, searching glance; when he realized I wasn’t about to swoon or scream or whatever he’d had in mind, he nodded. He was starting to look a little more like himself. “White female,” he said, “mid-twenties to early thirties, single stab wound to the chest. Cooper says she died sometime around midnight, give or take an hour. He can’t be more specific: shock, ambient temperature variations, whether there was physical activity around the time of death, all the rest of it.”

Unlike most people, I get on well with Cooper, but I was glad I’d missed him. The tiny cottage felt too full, full of clumping feet and people shifting and eyes on me. “Stabbed here?” I asked.

Sam shook his head. “Hard to tell. We’ll wait and see what the Bureau says, but all that rain last night got rid of a lot-we won’t be finding footprints in the lane, a blood trail, nothing like that. For what it’s worth, though, I’d say this isn’t our primary crime scene. She was on her feet for at least a while after she got stabbed. See there? Blood’s dripped straight down the leg of her jeans.” Frank shifted the torch beam, obligingly. “And there’s mud on both knees and a rip in one, like she was running and she fell.”

“Looking for cover,” I said. The image surged up at me like something from every forgotten nightmare: the lane twisting into the dark and her running, feet slipping helplessly on pebbles and her breath wild in her ears. I could feel Frank carefully standing back, saying nothing; watching.

“Could be,” Sam said. “Maybe the killer was coming after her, or she thought he was. She could’ve left a trail straight from his front door, for all we’ll ever know; it’s long gone.”

I wanted to do something with my hands, rub them through my hair, over my mouth, something. I shoved them in my pockets to keep them still. “So she got into shelter and collapsed.”

“Not exactly. I’m thinking she died over there.” Sam pulled back the brambles and nodded at a corner of the outer room. “We’ve got what looks like a fair-sized pool of blood. No way to be sure exactly how much-we’ll see if the Bureau can help there-but if there’s still plenty left after a night like this, I’d say there was a load of it to start with. She was probably sitting up against that wall-most of the blood is on the front of her top and on the lap and seat of her jeans. If she’d been lying down, it’d have seeped down her sides. See this?”

He pointed to the girl’s top, and the penny dropped with a bang: not tie-dye. “She twisted up the top and pressed it against the wound, trying to stop the bleeding.”

Huddled deep in that corner; rush of rain, blood seeping warm between her fingers. “So how’d she get over here?” I asked.

“Our boy caught up with her in the end,” Frank said. “Or someone did, anyway.”

He leaned over, lifted one of the girl’s feet by the shoelace-it sent a fast twitch down the back of my neck, him touching her-and tilted his torch at the heel of her runner: scuffed and brown, grained deep with dirt. “She was dragged. After death, because there’s no pooling under the body: by the time she got over here, she wasn’t bleeding any more. The guy who found her swears he didn’t touch, and I believe him. He looked like he was about to puke his guts up; no way he got closer than he had to. Anyway, she was moved not too long after she died. Cooper says rigor hadn’t set in yet, and there’s no secondary lividity-and she didn’t spend much time out in that rain. She’s barely damp. If she’d been in the open all night, she’d be drenched.”