I am a pervert, thought Isaac, and so is she.

Breakfast conversation was generally one-sided: Lin could sign with her hands while she ate, but Isaac’s attempts to talk and eat simultaneously made for incomprehensible noises and food debris on the table. Instead they read; Lin an artists’ newsletter, Isaac whatever came to hand. He reached out between mouthfuls and grabbed books and papers, and found himself reading Lin’s shopping list. The item a handful of pork slices was ringed and underneath her exquisite calligraphy was a scrawled question in much cruder script: Got company??? Nice bit of pork goes down a treat!!!

Isaac waved the paper at Lin. “What’s this filthy arse on about?” he yelled, spraying food. His outrage was amused but genuine.

Lin read it and shrugged.

Knows I don’t eat meat. Knows I’ve got a guest for breakfast. Wordplay on “pork.”

“Yes, thanks, lover, I got that bit. How does he know you’re a vegetarian? Do you two often engage in this witty banter?”

Lin stared at him for a moment without responding.

Knows because I don’t buy meat. She shook her head at the stupid question. Don’t worry: only ever banter on paper. Doesn’t know I’m bug.

Her deliberate use of the slur annoyed Isaac.

“Dammit, I wasn’t insinuating anything…” Lin’s hand waggled, the equivalent of a raised eyebrow. Isaac howled in irritation. “Godshit, Lin! Not everything I say is about fear of discovery!”

Isaac and Lin had been lovers nearly two years. They had always tried not to think too hard about the rules of their relationship, but the longer they were together the more this strategy of avoidance became impossible. Questions as yet unasked demanded attention. Innocent remarks and askance looks from others, a moment of contact too long in public-a note from a grocer-everything was a reminder that they were, in some contexts, living a secret. Everything was made fraught.

They had never said, We are lovers, so they had never had to say, We will not disclose our relationship to all, we will hide from some. But it had been clear for months and months that this was the case.

Lin had begun to hint, with snide and acid remarks, that Isaac’s refusal to declare himself her lover was at best cowardly, at worst bigoted. This insensitivity annoyed him. He had, after all, made the nature of his relationship clear with his close friends, as Lin had with hers. And it was all far, far easier for her.

She was an artist. Her circle were the libertines, the patrons and the hangers-on, bohemians and parasites, poets and pamphleteers and fashionable junkies. They delighted in the scandalous and the outre. In the tea-houses and bars of Salacus Fields, Lin’s escapades-broadly hinted at, never denied, never made explicit-would be the subject of louche discussion and innuendo. Her love-life was an avant-garde transgression, an art-happening, like Concrete Music had been last season, or ‘Snot Art! the year before that.

And yes, Isaac could play that game. He was known in that world, from long before his days with Lin. He was, after all, the scientist-outcast, the disreputable thinker who walked out of a lucrative teaching post to engage in experiments too outrageous and brilliant for the tiny minds who ran the university. What did he care for convention? He would sleep with whomever and whatever he liked, surely!

That was his persona in Salacus Fields, where his relationship with Lin was an open secret, where he enjoyed being more or less open, where he would put his arm around her in the bars and whisper to her as she sucked sugar-coffee from a sponge. That was his story, and it was at least half true.

He had walked out of the university ten years ago. But only because he realized to his misery that he was a terrible teacher.

He had looked out at the quizzical faces, listened to the frantic scrawling of the panicking students, and realized that with a mind that ran and tripped and hurled itself down the corridors of theory in anarchic fashion, he could learn himself, in haphazard lurches, but he could not impart the understanding he so loved. He had hung his head in shame and fled.

In another twist to the myth, his Head of Department, the ageless and loathsome Vermishank, was not a plodding epigone but an exceptional bio-thaumaturge, who had nixed Isaac’s research less because it was unorthodox than because it was going nowhere. Isaac could be brilliant, but he was undisciplined. Vermishank had played him like a fish, making him beg for work as a freelance-researcher on terrible pay, but with limited access to the university laboratories.

And it was this, his work, which kept Isaac circumspect about his lover.

These days, his relationship with the university was tenuous. Ten years of pilfering had equipped him with a fine laboratory of his own; his income was largely made up of dubious contracts with New Crobuzon’s less wholesome citizens, whose needs for sophisticated science constantly astounded him.

But Isaac’s research-unchanged in its aims over all those years-could not proceed in a vacuum. He had to publish. He had to debate. He had to argue, to attend conferences-as the rogue, the rebellious son. There were great advantages to renegacy.

But the academy did not just play at being old-fashioned. Xenian students had only been admitted as degree candidates in New Crobuzon for twenty years. To cross-love openly would be a quick route to pariah status, rather than the bad-boy chic he had assiduously courted. What scared him was not that the editors of the journals and the chairs of the conferences and the publishers would find out about Lin and him. What scared him was that he be seen not trying to hide it. If he went through the motions of a cover-up, they could not denounce him as beyond the pale.

All of which Lin took badly.

You hide us so you can publish articles for people you despise, she had signed at him once after they had made love.

Isaac, in sour moments, wondered how she would react if the art-world threatened to ostracize her.

That morning the lovers managed to kill the nascent argument with jokes and apologies and compliments and lust. Isaac smiled at Lin as he struggled into his shirt, and her headlegs rippled sensuously.

“What are you up to today?” he asked.

Going to Kinken. Need some colourberries. Going to exhibition in Howl Barrow. Working tonight, she added mock-ominously.

“I suppose I won’t be seeing you for a while, then?” Isaac grinned. Lin shook her head. Isaac counted off days on his fingers. “Well…can we have dinner at The Clock and Cockerel on, uh…Shunday? Eight o’clock?”

Lin pondered. She held his hands while she thought.

Gorgeous, she signed coyly. She left it ambiguous as to whether she meant dinner or Isaac.

They piled the pots and plates into the bucket of cold water in the corner and left them. As Lin gathered her notes and sketches to go, Isaac tugged her gently onto him, on the bed. He kissed her warm red skin. She turned in his arms. She angled up on one elbow and, as he watched, the dark ruby of her carapace opened slowly while her headlegs splayed. The two halves of her headshell quivered slightly, held as wide as they would go. From beneath their shade she spread her beautiful, useless little beetle wings.

She pulled his hand towards them gently, invited him to stroke the fragile things, totally vulnerable, an expression of trust and love unparalleled for the khepri.

The air between them charged. Isaac’s cock stiffened.

He traced the branching veins in her gently vibrating wings with his fingers, watched the light that passed through them refract into mother-of-pearl shadows.