Unnatural Crypsis

To save humanity, he must fight a war across universes — and trust an ally who may not be as human as she seems.

Dek Conrad's enemy doesn't just threaten our universe. It moves between all the universes, wiping out all nascent intelligent life.

To defeat this ephemeral enemy, Conrad must cross into a perpendicular universe: a set of strange, unstable realms that may hold the key to Earth's survival. There, he forms a fragile alliance with a being that looks human — but clearly isn't.

This ally knows a lot about the enemy. Too much. Far too much.

Is it a trap? A turning point? Or the beginning of an even greater war?

One wrong step could doom not just his people — but every sentient species across countless realities.

For fans of intricate, multi-perspective stories like The Expanse.