Whatever Peper writes about is what we’ll be talking about for the next year, and grappling with for the next decade.

James Cham, partner at Bloomberg Beta

This is the best kind of science fiction.

Kim Stanley Robinson

Simply terrific science fiction from the (very) near future.

Seth Godin

A sharply rendered, wildly entertaining thriller speaking to the dangerous realities of our present.

East Bay Express

Real and urgent. I read it all in a single fascinated sitting.

The New York Times Book Review

A tightly-woven tale of espionage and self-realization.

Popular Science

Cumulus is your new favorite surveillance-fueled dystopian novel. It’s a future we can all recognize—and one that we should all be genuinely afraid of.

Ars Technica

You’re going to go on a hell of a wrenching journey and I promise that it will enrich you long after you’ve reached the end.

Tech.co Books

Offers readers a special lens into a unique and compelling world packed with intrigue and adventure. A must-read trilogy.

Huffington Post Books

Relentlessly readable. Be warned, if you start, you probably won’t stop.

San Francisco Magazine