London Under Veil, the new book by Eunice and me, is publishing next week at WorldCon Glasgow!

Sadly, I won’t be there, but Eunice will, and she’ll have paperbacks and eBooks with her. (Plus you’ll be able to pick up copies of our other books too).

This is a…strange book. It’s like…um, well, imagine Harry Potter meets The Matrix by way of Tom Clancy. It’s got a wizarding school, and an alternate reality, and political intrigue, and Brexit, and computer security, and cats.

This book almost didn’t exist. It came into being because of a question I saw on Quora:

I laughed, I showed it to Eunice, I laughed, she laughed, I said “we could totally write a book about a coven of spellcasting sex workers,” we laughed, then she was like “…no, really, we could.”

Inspiration is everywhere.

Fast forward a couple years and somehow we’ve written a novel about a young British-born Chinese infosec worker at a webhosting company in Shoreditch who evades a kidnapping attempt and finds herself drawn into a long-running underground war between an ancient guild of spellcasting sex workers and a group of rage mages who have infiltrated the Tories. Along the way, she befriends Iris, the Guild’s asexual spell engineer, and they have adventures.

There’s intrigue, and chases, and a school of sex magic, and mathematics, and computer security, and sex, of course cats, because every fule know you can’t have spellcasting sex workers without cats.

Here’s a G-rated excerpt, so you know what you’re getting into:

After class, May rode the lift down to the old car park. “Iris!” she sang as she walked into the workshop. “Are you ready to watch me wank—oh. Who are you?”

“This is Lillian!” Iris said. “Lillian, this is May. She officially came on board yesterday. Lillian’s been a member of our little family for about ten months, haven’t you?”

May offered her hand. Lillian regarded her for a moment through intelligent grey eyes in an elfin face, then accepted it with dainty courtesy. “Lilly volunteered to accelerate your education,” Iris said. “Shall we get to it, then?”

“Get to what, exactly?”

“Ah.” Iris fished around the clutter on her workbench, dragged out a compact whiteboard, and balanced it precariously against one of the monitors. “So you know how Madame Sophia has been teaching you how to hold patterns in your head?”

“Yeah.”

“Right. Think of it like learning maths. The universe runs on maths, yes? Except it doesn’t, not really. The universe does what it does. Maths is the language we use to describe it.” She pulled the cap off a whiteboard marker with a grin. “If I write 1+1=2 on this board like so,” she went on as she scribbled on the whiteboard, “you know what that means. But these symbols, they’re arbitrary, right? They’re just characters that represent things.”

May folded her arms. “Okay, and?”

“Magic is the application of intent to the world. The visualisation exercises you’ve been doing, they’re part maths and part training you how to think.” She wiped the board clean. “Okay, so. Casting spells is just a matter of learning to think in a certain way, and learning to channel emotional energy into the world. Stronger the emotion, the better it works. Any kind of emotion can do in a pinch, but some work better than others. Fear, that’s strong but hard to control, and hard to bring up when you need it. Love and hate are less strong than people think. Rage, rage works really well. But lust, ah. Lust, desire, arousal, those are versatile. The thing about emotional energy is, it’s unpatterned, right? Chaotic. The trick is…well, the skill is letting that emotion flow through you without losing your focus.” She turned to the board. “So you have your home symbol, whatever it is. Don’t tell me what it is. Don’t tell anyone else, either. That symbol represents yourself, your will, your ‘I that is I,’ see? It’s like the number 0 in a mathematical system. Did you know you can build an entire system of maths with no numbers except a symbol for zero and a symbol for incrementation?”

“No.”

“Old hat for me,” Lillian said. “My undergrad degree is in mathematics.”

“Undergrad, huh? What’s your graduate degree in?”

Lillian perched on the edge of the bed. “Master’s in philosophy. Long story.”

“So how’d you end up involved in…all this?”

“Ah.” Lillian grinned. “I like maths. I like philosophy. I like fucking. Where am I going to find another job that lets me put my interests together?” She leaned back on her elbows with a lopsided smirk. “What brought you here? Maths, philosophy, or fucking?” She stretched out a foot in May’s direction. “I hope it’s fucking.”

Iris snapped her fingers. “If you’re finished hitting on the new girl, can I direct your attention to the whiteboard, please?” She drew a letter H in the centre. “Okay, so this is your home symbol, right?” She drew five more symbols around it. “And this is one of the basic visualisations Sophia taught you, right?”

“Yeah.”

“Right. This diagram forms your basic channelling array. This is what you hold in your mind when you want to focus your will on something, got it? This is your simple, boring, one plus one equals two stuff. Now let’s show you what calculus looks like.”

The book is up for preorder on Amazon, and if you’re going to WorldCon Glasgow, be sure to say hi to Eunice!