“Why they let two radicals, one of them a resident alien and both of them into antiwar protests and stuff like that, adopt a baby—” Miriam shook her head. Then she grinned. “Did they think I would slow you down or something?”

“Possibly, possibly. But I don’t remember being asked any questions about our politics when we went to the adoption agency—it was much easier to adopt in those days. They didn’t ask much about our background except whether we were married. We didn’t save the newspapers at the time, by the way. Morris bought them as morgue copies later.”

“Well.” Miriam replaced the news clipping, put the lid back on the box, and contemplated it. “Ancient history.”

“You know, if you wanted to investigate it—” Iris was using that look on her, the penetrating diamond-tipped stare of inquisition, the one Miriam tried to think herself into when interviewing difficult customers—“I bet a journalist of your experience would do better than some doughnut stuffed policeman on a routine job. Don’t you think?”

“I think I really ought to help my real mother figure out what she’s going to do about not going stir-crazy while she gets better,” Miriam replied lightly. “There are more immediate things to investigate, like whether your tea is cold and if there are any cookies in the kitchen. Why don’t we leave digging up the dead past for some other time?”

 Miriam drove  away  slowly,  distractedly,  nodding in time to the beat of the wind—shield wipers. Traffic was as bad as usual, but nothing untoward penetrated her thoughts.

She parked, then hunched her shoulders against the weather and scurried to her front door. As usual, her keys got muddled up. Why does this always happen when I’m in a hurry? she wondered. Inside, she shook her way out of her raincoat and jacket like a newborn moth emerging from its sodden cocoon, hung them on the coat rail, then dumped her shoulder bag and the now-damp cardboard box on the old telephone table and bent to unzip her boots. Free of the constraints of leather, her feet flexed luxuriously as she slid them into a pair of battered pink slippers. Then she spotted the answering machine’s blinking light. “You have new messages,” she sang to herself, slightly manic with relief at being home. “Fuck ’em.” She headed for the kitchen to switch on the coffeepot, then poured a mug and carried it into her den.

The den had once been the dining room of this suburban home, a rectangular space linked to the living room by an archway and to the kitchen by a serving hatch. Now it was a cramped office, two walls jammed with bookcases and a third occupied by a huge battered desk. The remaining wall was occupied by a set of french windows opening onto the rear deck. Rain left twisting slug trails down the windows, kicking up splashes from the half-submerged ceramic pots outside. Miriam planted the coffee mug in the middle of the pile of stuff that accumulated on her desk and frowned at the effect. “It’s a mess,” she said aloud, bemused. “How the hell did it get this untidy?”

“This is bad,” she said, standing in front of her desk. “You hear me?” The stubborn paperwork and scattering of gadgets stubbornly refused to obey, so she attacked them, sorting me letters into piles, opening unopened mail and discarding the junk, hunting receipts and filing bills. The desk turned out to be almost nine months’ deep in trivia, and cleaning it up was a welcome distraction from having to think about her experience at work. When the desk actually showed a clear surface—and she’d applied the kitchen cleaner to the coffee rings—she started on the e-mail. That took longer, and by the time she’d checked off everything in her in-box, the rain battering on the windows was falling out of a darkening sky as night fell.

When everything was looking shipshape, another thought struck her. “Paperwork. Hmm.” She went through into the hall and fetched the pink and green shoebox. Making a face, she upended it onto the desk. Papers mushroomed out, and something clattered and skittered onto the floor. “Huh?”

It was a paper bag. Something in it, a hard, cold nucleus, had spilled over the edge of the desk. She hunted around for a few seconds, then stooped and triumphantly deposited bag and contents next to the pile of yellowing clippings, rancid photocopies, and creamy documents. One of which, now that she examined it, looked like a birth certificate—no, one of those forms that gets filled in in place of a birth certificate when the full details are unknown. Baby Jane Doe, age approximately six weeks, weight blah, eye colour green, sex female, parents unknown… for a moment Miriam felt as if she was staring at it down a dark tunnel from a long way away.

Ignoring the thing-that-rattled, Miriam went through the papers and sorted these, too, into two stacks. Press clippings and bureaucracy. The clippings were mostly photocopies: They told a simple—if mysterious—tale that had been familiar to her since the age of four. A stabbing in the park. A young woman—apparently a hippie or maybe a Gypsy, judging by her strange clothes—found dead on the edge of a wooded area. The cause of death was recorded as massive blood loss caused by a deep wound across her back and left shoulder, inflicted by some kind of edged weapon, maybe a machete. That was unusual enough. What made it even more unusual was the presence of the six-week-old baby shrieking her little heart out nearby. An elderly man walking his dog had called the police. It was a seven-day wonder.

Miriam knew the end to that story lay somewhere in Morris and Iris Beckstein’s comforting arms. She’d done her best to edit this other dangling bloody end to the story out of her life. She didn’t want to be someone else’s child: She had two perfectly good parents of her own, and the common assumption that blood ties must be thicker than upbringing rankled. Iris’s history taught better—the only child of Holocaust refugees settled in an unfriendly English town after the war, she’d emigrated at twenty and never looked back after meeting and marrying Morris.

Miriam shook out the contents of the paper bag over the not-quite birth certificate. It was a lens-shaped silver locket on a fine chain. Tarnished and dull with age, its surface was engraved with some sort of crest of arms: a shield and animals. It looked distinctly cheap. “Hmm.” She picked it up and peered at it closely. This must be what Ma told me about, she thought. Valuable? There was some sort of catch under the chain’s loop. “I wonder…”

She opened it.

Instead of the lover’s photographs she’d half-expected, the interior of the shell contained a knotwork design, enamel painted in rich colours. Curves of rich ochre looped and inter-penetrated, weaving above and beneath a branch of turquoise. The design was picked out in silver—it was far brighter than the exposed outer case had suggested.

Miriam sighed and leaned back in her sprung office chair. “Well, there goes that possibility,” she told the press clippings gloomily. No photographs of her mother or long-lost father. Just some kind of tacky cloisonné knotwork design.

She looked at it closer. Knotwork. Vaguely Celtic knot-work. The left-hand cell appeared to be a duplicate of the right-hand one. If she traced that arc from the top left and followed it under the blue arc—

Why had her birth-mother carried this thing? What did it mean to her? (The blue arc connected through two interlinked green whorls.) What had she seen when she stared into it? Was it some kind of meditation aid? Or just a pretty picture? It certainly wasn’t any kind of coat of arms.

Miriam leaned back further. Lifting the locket, she dangled it in front of her eyes, letting the light from the bookcase behind her catch the silver highlights. Beads of dazzling blue-white heat seemed to trace their way around the knot’s heart. She squinted, feeling her scalp crawl. The sound of her heart beating in her ears became unbearably loud: There was a smell of burning toast, the sight of an impossible knot twisting in front of her eyes like some kind of stereoisogram forming in midair, trying to turn her head inside out—