“That house shimmered in my mind like some fairy fort that appeared for one day in a lifetime, tantalizing and charged, with those four cool figures for guardians and inside secrets too hazy to be named. My face was the one pass that would unbar the door. Whitethorn House was ready and waiting to whisk itself away to nothing, the instant I said no.”

“The front door opened smoothly to my key, the air inside stirred as I came in and it didn't feel over-intimate anymore; it felt like a slight smile and a cool brief touch on the cheek, like a welcome.”

“This case was too full of skewed, slippery parallels, and I couldn't shake the uneasy sense that they were somehow deliberate. Every coincidence felt like a sea-worn bottle slammed down on the sand at my feet, with my name engraved neatly on the glass and inside a message in some mockingly indecipherable code.”

“The clothes felt like something more: fine chain-mail armor handmade to fit me, or robes laid out ready for some fiercely secret ceremony. They made my palms tingle when I touched them.”

“Something rippled round the table: a loosening, a settling, a long sigh too low to hear. Un ange passe, my French grandfather would have said: an angel is passing. Somewhere upstairs I heard the faint, dreamy note of a clock striking.”

“I didn't believe her, of course. The lie was transparent—it something that size, someone would have mentioned it during the door-to-door--and it went straight to my heart as no sonata ever could have; because I recognized it. That's my twin brother, his name's Peter, he's seven minutes older than me. . . . Children—it and Rosalind was little more—it don't tell pointless lies unless the reality is too much to bear.”

“My friend Emma, who likes things to add up neatly, claims that this is because my parents died when I was too young to take it in: they were there one day and gone the next, crashing through that fence so hard and fast they left it splintered for good. When I was Lexie Madison for eight months she turned into a real person to me, a sister I lost or left behind on the way; a shadow somewhere inside me, like the shadows of vanishing twins that show up on people's X-rays once in a blue moon. Even before she came back to find me I knew I owed her something, for being the one who lived.”