Two time-traveling real estate agents from warring futures, working their way through days gone by, begin to exchange letters—and fall in like in this thrilling and intimate reserve from award-winning writers Amal El-Mohtar and Maximum Gladstone.

In the ashes of a dying world, Red discovers a notice marked “Burn before reading. Signed, Blue.”

So starts an unlikely correspondence between two competitor agents inside a war that stretches through the vast reaches of time and space.

Red is one of the Company, a post-singularity technotopia. Blue belongs to Garden, a single huge consciousness embedded in every organic matter. Their pasts are bloody and their futures mutually unique. They have nothing at all in common—save that they’re the very best, and they’re by itself.

Today what began as a battlefield boast grows right into a dangerous video game, one both Red and Blue are determined to win. Because winning’s everything you do in war. Isn’t it?

A tour de force collaboration from two powerhouse authors that spans the whole of time and space.