The trick with Gadfly was persuading him to wear the same clothes for every session. Oil paint needs days to dry between layers, and he had trouble understanding I couldn’t just swap his entire outfit for another he liked better. He was astonishingly vain even by fair folk standards, which is like saying a pond is unusually wet, or a bear surprisingly hairy. All in all, it was a disarming quality for a creature who could murder me without rescheduling his tea.

“I might have some silver embroidery done about the wrists,” he said. “What do you think? You could add that, couldn’t you?”

“Of course.”

“And if I chose a different cravat . . .”

Inwardly, I rolled my eyes. Outwardly, my face ached with the polite smile I’d maintained for the past two and a half hours. Rudeness was not an affordable mistake. “I could alter your cravat, as long as it’s more or less the same size, but I’d need another session to finish it.”

“You truly are a wonder. Much better than the previous portrait artist—that fellow we had the other day. What was his name? Sebastian Manywarts? Oh, I didn’t like him, he always smelled a bit strange.”

It took me a moment to realize Gadfly was referring to Silas Merryweather, a master of the Craft who died over three hundred years ago. “Thank you,” I said. “What a thoughtful compliment.”

“How engaging it is to see the Craft change over time.” Barely listening, he selected one of the cakes from the tray beside the settee. He didn’t eat it immediately, but rather sat staring at it, as an entomologist might having discovered a beetle with its head on backward. “One thinks one has seen the best humans have to offer, and suddenly there’s a new method of glazing china, or these fantastic little cakes with lemon curd inside.”

By now I was used to fair folk mannerisms. I didn’t look away from his left sleeve, and kept dabbing on the silk’s glossy yellow shine. However, I remembered a time in which the fair folk’s behavior had unsettled me. They moved differently than humans: smoothly, precisely, with a peculiar stiffness to their posture, and never put so much as a finger out of place. They could remain still for hours without blinking, or they could move with such fearsome swiftness as to be upon you before you could even gasp in surprise.

I sat back, brush in hand, and took in the portrait in its entirety. It was nearly finished. There lay Gadfly’s petrified likeness, as unchanging as he was. Why the fair folk so desired portraits was beyond me. I supposed it had something to do with vanity, and their insatiable thirst to surround themselves with human Craft. They would never reflect on their youth, because they knew nothing else, and by the time they died, if they even did, their portraits would be long rotted away to nothing.

Gadfly appeared to be a man in his middle thirties. Like every example of his kind he was tall, slim, and beautiful. His eyes were the clear crystal blue of the sky after rain has washed away the summer heat, his complexion as pale and flawless as porcelain, and his hair the radiant silver-gold of dew illuminated by a sunrise. I know it sounds ridiculous, but fair folk require such comparisons. There’s simply no other way to describe them. Once, a Whimsical poet died of despair after finding himself unequal to the task of capturing a fair one’s beauty in simile. I think it more likely he died of arsenic poisoning, but so the story goes.

You must keep in mind, of course, that all of this is only a glamour, not what they really look like underneath.

Fair folk are talented dissemblers, but they can’t lie outright. Their glamour always has a flaw. Gadfly’s flaw was his fingers; they were far too long to be human and sometimes appeared oddly jointed. If someone looked at his hands too long he would lace them together or scurry them under a napkin like a pair of spiders to put them out of sight. He was the most personable fair one I knew, far more relaxed about manners than the rest of them, but staring was never a good idea—unless, like me, you had a good reason to.

Finally, Gadfly ate the cake. I didn’t see him chew before he swallowed.

“We’re just about finished for the day,” I told him. I wiped my brush on a rag, then dropped it into the jar of linseed oil beside my easel. “Would you like to take a look?”

“Need you even ask? Isobel, you know I’d never pass up the opportunity to admire your Craft.”

Before I knew it Gadfly stood leaning over my shoulder. He kept a courteous space between us, but his inhuman scent enveloped me: a ferny green fragrance of spring leaves, the sweet perfume of wildflowers. Beneath that, something wild—something that had roamed the forest for millennia, and had long spidery fingers that could crush a human’s throat while its owner wore a cordial smile.

My heart skipped a beat. I am safe in this house, I reminded myself.

“I believe I do like this cravat best after all,” he said. “Exquisite work, as always. Now, what am I paying you, again?”

I stole a glance at his elegant profile. A strand of hair had slipped from the blue ribbon at the nape of his neck as if by accident. I wondered why he’d arranged it that way. “We agreed on an enchantment for our hens,” I reminded him. “Each of them will lay six good eggs per week for the rest of their lives, and they must not die early for any reason.”

“So practical.” He sighed at the tragedy. “You are the most admired Crafter of this age. Imagine all the things I could give you! I could make pearls drop from your eyes in place of tears. I could lend you a smile that enslaves men’s hearts, or a dress that once beheld is never forgotten. And yet you request eggs.”

“I quite like eggs,” I replied firmly, well aware that the enchantments he described would all turn strange and sour, even deadly, in the end. Besides, what on earth would I do with men’s hearts? I couldn’t make an omelette out of them.

“Oh, very well, if you insist. You’ll find the enchantment in effect beginning tomorrow. With that I’m afraid I must be off—I’ve the embroidery to ask after.”

I stood with a creak of my chair and dropped him a curtsy as he paused at the door. He gave an elegant bow in response. Like most fair folk he was adept at pretending he returned the courtesy by choice, not a strict compulsion that was, to him, as necessary as breathing.

“Aha,” he added, straightening, “I’d nearly forgotten. We’ve had gossip in the spring court that the autumn prince is going to pay you a visit. Imagine that! I look forward to hearing whether he manages to sit through an entire session, or hares off after the Wild Hunt as soon as he’s arrived.”

I wasn’t able to school my expression at the news. I stood gaping at Gadfly until a puzzled smile crossed his lips and he extended his pale hand in my direction, perhaps trying to determine whether I’d died standing up, not an unreasonable concern, as to him humans no doubt seemed to expire at the slightest provocation.

“The autumn—” My voice came out rough. I closed my mouth and cleared my throat. “Are you quite certain? I was under the impression the autumn prince did not visit Whimsy. No one has seen him in hundreds . . .” Words failed me.

“I assure you, he is alive and well. Why, I saw him at a ball just yesterday. Or was it last month? In any event, he shall be here tomorrow. Do pass on my regards.”

“It—it will be an honor,” I stammered, mentally cringing at my uncharacteristic loss of composure. Suddenly in need of fresh air, I crossed the room to open the door. I showed Gadfly out and stood gazing across the field of summer wheat as his figure receded up the path.

A cloud passed beneath the sun, and a shadow fell across my house. The season never changed in Whimsy, but as first one leaf dropped from the tree in the lane, and then another, I couldn’t help but feel some transformation was afoot. Whether or not I approved of it remained to be seen.