After a decade, acclaimed science-fiction master John Scalzi returns to the galaxy of the Old Man's War series with the long awaited seventh book, The Shattering Peace.

The peace is shattering.

For a decade, peace has reigned in interstellar space. A tripartite agreement between the Colonial Union, the Earth, and the alien Conclave has kept the forces of war at bay, even when some would have preferred to return to the fighting and struggle of former times. For now, more sensible heads have prevailed.

But now, there is a new force that threatens the hard-maintained peace: The Consu, the most advanced intelligent species humans have ever met, are on the cusp of a species-defining civil war. This war is between Consu factions ... but nothing the Consu ever do is just about them. The Colonial Union, the Earth and the Conclave are all at risk of being dragged into the conflict, whether they want to be involved or not.

Gretchen Trujillo is a former Colonial Union diplomat, trying to forge a new life away from the conflicts of nations, human and alien. But when she is called to take part in a secret mission involving representatives from every powerful faction in space, what she finds there has the chance to redefine the destinies of each ... or destroy them forever.