Redemption Ark (Audible Audio Edition): Alastair Reynolds, John Lee, Tantor Audio: Audible Books & Originals

Late in the 26th century, the human race has advanced enough to accidentally trigger the Inhibitors---alien-killer machines designed to detect intelligent life and destroy it.

The only hope for humanity lies in the recovery of a secret cache of doomsday weapons---and a renegade named Clavain who is determined to find them.

But other factions want the weapons for their own purposes---and the weapons themselves have another agenda altogether.