line where a silver crucifix had once hung on a silver chain. For many long years of her childhood and adolescence, she hadn’t been able to take the thing off without being accused of blasphemy—not even to shower or sleep.
Not that there had been much she could do, without getting accused of being the devil’s child.
“Zoe,” her mother would say, shaking a finger and pursing her lips. “You just quit that demon logic now. The devil is in you, child. You’ve got to cast him right out.”
Demon logic, apparently, was mathematics, especially when present in a child of six years old.
Over and over again, her mother would bring up how different she was. When Zoe didn’t socialize with the children her own age in kindergarten, or school. When she didn’t take up any after-school clubs except for extra study in math and science, and even then didn’t form groups or make friends. When she understood ratios in cooking after watching her mother bake things just once.
Very quickly, Zoe had learned to suppress her natural instinct for numbers. When she knew the answers to the questions people asked without having to even work them out, she kept quiet. When she figured out which of the kids in her class had stolen the teacher’s keys and hidden them, and where they must have been hidden, all through proximity and the clues left behind, she didn’t say a word.
In many ways, not much had changed since that scared little six-year-old, desperate to please her mother, had stopped saying every little weird thing that came into her mind and started pretending to be normal.
Zoe shook her head, bringing her attention back to the present. That was more than twenty-five years ago. No use dwelling on it now.
She glanced out of her window at the Bethesda skyline, looking as she always did in the precise direction of Washington, DC. She had figured out the right way to look the day she had signed the lease, noting several local landmarks which lined up to show her a compass direction. It wasn’t anything political or patriotic; she just liked the way they matched up, creating that perfect line on the map.
It was dark out, and even the lights of the other buildings around hers were being extinguished, one by one. It was late; late enough that she should be getting on with things and going to bed.
Zoe fired up her laptop and quickly tapped in her password, opening her email inbox to check for any updates. The last task of her day. There were a few she could quickly delete—junk mail, mostly messages about sales for brands she had never shopped for and scams from supposed Nigerian princes.
Clearing the junk left her with a few more she could read and then discard, missives that needed no reply. Updates from social media, which she rarely visited, and newsletters from websites that she followed.
One was a little more interesting. A ping through from her online dating profile. A short but sweet message—some guy asking for a date. Zoe clicked through to his page and examined his images, considering them. She quickly assessed his actual height, and was pleasantly surprised to find that it matched up with what he had written in his details. Maybe someone with a little honesty about him.
The next was yet more intriguing, but even so, Zoe felt an urge to put off reading it. It was from her mentor and former professor, Dr. Francesca Applewhite. She could predict what the doctor was going to ask before she read it, and she wasn’t going to like it.
Zoe sighed and opened it anyway, resigned to the need to get it over with. Dr. Applewhite was brilliant, the kind of mathematician she had always dreamed of being until she realized she could put her talents to use as an agent. Francesca was also the only other person who knew the truth about the way her mind worked—the synesthesia that turned clues into visual numbers into facts in her head. The only person she liked and trusted enough to talk about it with.
Actually, Dr. Applewhite had been the one to turn her on to the FBI in the first place. She owed her a lot. But that wasn’t why she was reluctant to read her message.
Hi Zoe, the email read. Just wanted to ask whether you’ve contacted the therapist I suggested. Have you been able to schedule a session? Let me know if you need any help.
Zoe sighed. She had not contacted the therapist, and she didn’t truly know whether she was going to. She closed the email without replying, relegating it to one of tomorrow’s problems.
Euler jumped up onto her lap, obviously having satisfied himself with his dinner, and started to purr. Zoe gave him another scratch, looking at her screen, deciding.
Pythagoras let out an indignant mew at being neglected, and Zoe glanced at him with an affectionate smile. It wasn’t exactly a sign, but it was enough to push her into action. She went back to the previous message, from the dating site, and typed out a response before she could change her mind.
Would love to meet. When is good for you?—Z.
“After you,” he said, smiling and gesturing toward the breadbasket.
Zoe smiled back and picked up a piece of bread, her mind automatically calculating the width and depth of each piece to pick one that was somewhere in the middle range. Didn’t want to look too greedy now.
“So, what do you do, John?” Zoe asked. It was easy enough to get the conversation started this way—she had been on enough dates to know that it was standard form. Besides that, it was always a good idea to make sure that he had a good income.
“I’m a lawyer,” John said, taking his own serving of bread. Biggest piece. Somewhere in the region of 300 calories. He would be halfway to full before their main course came. “I mostly deal with property disputes, so there’s not much overlap between your work and mine.”
Zoe noted the average salary for a property lawyer in their area and nodded mutely, calculations flashing through her mind. Between them they would probably be well set for a mortgage on a three-bedroom property, and that was just for starters. Room for a nursery. Enough career scope to upgrade later on down the line.
His face was almost symmetrical, too. Funny how that was coming up lately. There was just one twist, a certain way he had of smiling that lifted up his right cheek while the left stayed more or less in position. A lopsided smile. There was something charming about it, perhaps because of the asymmetry. She counted the correct number of perfectly straight, white teeth flashing between his lips.
“So, how about your family? Any siblings?” John tried, his tone faltering a little.
Zoe realized she had been expected to at least make some kind of comment on his work, and picked herself up mentally. “Just me,” she said. “I was raised by my mom. We are not close.”
John lifted an eyebrow for the barest second before nodding. “Oh, that sucks. My family is pretty tight. We get together for family meals at least once a month.”
Zoe’s eyes flicked over his lean physique, and she decided that he must not have been eating too badly at those dinners. Mind you, he clearly went to the gym. What could he bench? Maybe 200 pounds, judging by those arm muscles rippling under his blue striped shirt.
There had been silence between them for a few moments now. Zoe ripped off a piece of bread and shoved it into her mouth, then chewed it as fast as she could to free her mouth again. People didn’t speak while they ate, at least not in polite society, so that served as kind of an excuse, as far as she was concerned.
“Is it just you and your parents?” Zoe asked, as soon as the bite had sunk down her throat, thick and clinging. No, she thought. Two siblings,
