The rest of the book was empty, except for the twenty-second of August: Dad’s bday.

Not a changeling or a collective hallucination, after all. She had a father, somewhere out there, and she hadn’t wanted to forget his birthday. She had kept at least one slender tie to the life where she had started out.

I went through the pages again, slower this time, looking for anything I’d missed. Towards the beginning, a few dates here and there were circled: 2 January, 29 January, 25 February. The first page had a tiny calendar for December 2004, and sure enough, there was a circle around the sixth.

Twenty-seven days apart. Lexie had been clockwork and she had kept track. By the end of March, with no circle around the twenty-fourth, she had to have suspected she was pregnant. Somewhere-not at home; at Trinity or in some café, where nobody would see the packet in the bin and wonder-she had taken a pregnancy test, and something had changed. Her date book had turned to a fierce secret, N had moved in and everything else had been stripped away.

N. An obstetrician? A clinic? The baby’s father?

“What the hell were you at, girl?” I said softly, into the empty room. There was a whisper behind me and I jumped about a mile, but it was only the breeze riffling the net curtains.

I thought about taking the date book back to my room, but in the end I figured Lexie had probably had reasons of her own for not leaving it there, and her hiding place had apparently worked fine so far. I copied the good bits into my own notebook, put hers back under the bath and slid the panel into place. Then I went over the house, getting to know the details and doing a quick, not-too-thorough search as I went. Frank would expect to hear that I’d done something useful with my day, and I already knew I wasn’t going to tell him about the date book, at least not yet.

I started at the bottom and worked my way up. If I found anything good, we were going to have a major admissibility battle on our hands. I was a resident of the house, which meant I could look in the common spaces all I wanted but the others’ rooms were basically out of bounds, and I was there under false pretenses to begin with; this is the kind of tangle that buys lawyers new Porsches. Once you know what you’re chasing, though, you can almost always find a legit way to get to it.

The house had the effortlessly off-kilter feel of something out of a storybook-I kept expecting to fall down a secret staircase, or come out of a room into a completely new corridor that only existed on alternate Mondays. I worked fast: I couldn’t make myself slow down, couldn’t shake the feeling that somewhere in the attic a huge clock was counting down, great handfuls of seconds tumbling away.

On the ground floor were the double sitting room, the kitchen, the toilet and Rafe’s room. Rafe’s room was a mess-clothes piled in cardboard boxes, sticky glasses and snowdrifts of paper everywhere-but in an assured way; you could tell he usually knew where everything was, even if no one else could work it out. He had been goofing off on one wall with charcoal, dashing off quick, fairly impressive sketches for some kind of mural involving a beech tree, a red setter and a guy in a top hat. On the mantelpiece was-eureka-the Head: a porcelain phrenology bust, staring loftily out over Lexie’s red bandanna. I was starting to like Rafe.

The first floor had Abby’s room and the bathroom at the front, Justin’s and a spare room to the back-either it had been too complicated to clear out, or Rafe liked being on his own downstairs. I started with the spare. The thought of going into either of the others put a small, ridiculous nasty taste in my mouth.

Great-uncle Simon had obviously never, ever thrown anything away. The room had a schizophrenic, dreamlike look, some lost store-cupboard of the mind: three copper kettles with holes in them, a moldy top hat, a broken stick-horse giving me a Godfather leer, what appeared to be half of an accordion. I know nothing about antiques, but none of it looked valuable, definitely not valuable enough to kill for. It looked more like stuff you would leave outside the gate in the hope that drunk students on a kitsch kick would take it home.

Abby and Justin were both neat, in very different ways. Abby went in for knickknacks-a tiny alabaster vase holding a handful of violets, a lead-crystal candlestick, an old sweet tin with a picture of a red-lipped girl in improbable Egyptian getup on the lid, all shiny clean and lined up carefully on just about every flat surface-and color; the curtains were made of strips of old fabric sewn together, red damask, bluebell-sprigged cotton, frail lace, and she had glued patches of fabric over the bald spots in the faded wallpaper. The room felt cozy and quirky and a little unreal, like the den of some kids’-book wood-land creature that would wear a frilly bonnet and make jam tarts.

Justin, sort of unexpectedly, turned out to have minimalist tastes. There was a small nest of books and photocopies and scribbled pages beside his bedside table, and he had covered the back of his door with photos of the gang-arranged symmetrically, in what looked like chronological order, and covered with some kind of clear sealant-but everything else was spare and clean and functional: white bedclothes, white curtains blowing, dark wood furniture polished to a shine, neat rows of balled-up socks in the drawers and glossy shoes at the bottom of the wardrobe. The room smelled, very faintly, of something cypressy and masculine.

There was nothing dodgy in any of the bedrooms, as far as I could see, but something about all three of them kept catching at me. It took me a while to put my finger on it. I was kneeling on Justin’s floor, checking under his bed like a burglar (nothing, not even dust bunnies), when it hit me: they felt permanent. I had never lived in a place where I could mess with the wallpaper or glue things down-my aunt and uncle wouldn’t have objected, exactly, but their house had a tiptoe atmosphere that prevented anything along those lines from even occurring to me, and all my landlords apparently had this idea that they were renting me Frank Lloyd Wright’s finest; it had taken me months to convince my current guy that property values would not plummet if I painted the walls white instead of banana-barf yellow and stuck the LSD-based carpet in the garden shed. None of this had bothered me at the time, but all of a sudden, surrounded by this houseful of happy, cavalier possessiveness-I would have loved a mural; Sam can draw-it seemed like a very strange way to live, on some stranger’s sufferance, asking permission like a little kid before I left any mark.

The top floor: my room, Daniel’s, two more spares. The one beside Daniel was full of old furniture, tumbled in splayed heaps as if an earthquake had hit: those grayish undersized chairs that never actually get used, a display cabinet that looked like the Rococo movement had thrown up on it, and just about everything in between. Bits and pieces had obviously been taken out-drag marks, bare patches-presumably to furnish the rooms when the five of them moved in. What was left was inches deep in trailing, sticky dust. The room next to mine had more wild debris (a cracked stone hot-water bottle, mud-crusted green wellies, a mouse-shredded tapestry cushion involving deer and flowers) and teetering stacks of cardboard boxes and old leather suitcases. Someone had made a start on going through this stuff, not too long ago: layers of bright finger marks on some of the suitcase lids, one even wiped semiclean, mysterious outlines in corners and on boxes where things had been taken away. There were tangles of faint shoe prints on the dusty floorboards.

If you were going to hide something-a murder weapon, or some kind of evidence, or some small priceless antique-this wouldn’t be a bad place. I went through all the cases that had been opened, staying well clear of the finger marks, just in case, but they were stuffed to the lids with pages and pages of crabby fountain-pen scribble. As far as I could tell, someone, presumably Great-uncle Simon, had been writing a history of the March family through the ages. The Marches had been around for a while-the dates went back to 1734, when the house had been built-but had apparently never done anything more interesting than getting married, buying the odd horse and gradually losing most of their estate.