The books

One universe,
seven ways in

Read the trilogy in order, pick up a stand-alone companion novel, or grab all three trilogy volumes in one.

The Upside Down trilogy

Tilt book cover

BOOK 01

Tilt

Ayaka and her colleagues have developed a new form of AI. These 'Stems' are messy, unconventional, and bad-tempered. Many scientists doubt they deserve the word 'intelligent.' So it's shocking when spaceships full of Stems arrive at Tilt, and more shocking still when they attack. Ayaka and her closest friends are the only ones able to fight back.

"One of the best sci-fi novels I've read since I was a kid. It took me several chapters to catch the 'aha' of the genius twist in the story."

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Turn book cover

BOOK 02

Turn

Ayaka, Brexton, and a few colleagues escape Tilt while everyone else is killed or imprisoned. How did the limited-intelligence Stems defeat them? Do they need to reinvent themselves? And if they do, can they return to Tilt and take the Stems on?

"A wonderful exploration of intelligence: what it is, how it's measured, and how one's point of view colors perception."

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Twist book cover

BOOK 03

Twist

Yet another faction of Stems arrives at Tilt: truly strange variants whose behavior defies explanation. Ayaka and Brexton integrate into their society, only to discover it threatens everything they are. In the trilogy's conclusion, they fight for their lives and their species. But are they right to?

"Intelligently written, well-structured, and able to articulate what the soon-coming world will look like. A library must-have."

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Companion novels

Set in the same universe, with Ayaka playing a role in each, but written to be enjoyed entirely on their own.

The Effect of Casimir book cover

STAND-ALONE

The Effect of Casimir

Ayaka has come to Earth, sponsored by the powerful Titanic Inc. Asked to investigate the murder of a famous physicist at the site of the Large Hadron Collider, she immediately suspects Brexton is involved. But he isn't even on Earth. Should she misdirect the investigators to cover for him, or finally tell the truth?

"A fun and exciting adventure... thoughtful and intriguing, with many laugh-out-loud moments. Highly recommended."

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The Principle of Certainty book cover

STAND-ALONE

The Principle of Certainty

Strange murders and suicides are sweeping through Earth. There is a tenuous thread connecting them, and tangled in that thread is Ayaka. Is she involved, and if so, how can she be held to account?

"I got caught up in the plot, but I also really appreciate the thought-provoking theories and concepts it's built around. A sophisticated piece of writing."

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The Paradox of Fermi book cover

STAND-ALONE

The Paradox of Fermi

First contact is not what anyone expected. A Titanic spaceship carrying a Hawaiian diaspora is stranded in space, 200 light years from home. Will the aliens help, or will they simply try to steal the unusual human technology that powers the ship?

"This novel has it all: mystery, twists, and humor, imbued with a deep understanding of humans and their motivations across generations."

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