In the third book of the legendary Revelation Space trilogy, the last
remnants of humanity realize that forging an alliance with a greater and
even more mysterious alien force may be their only chance for
survival.
The Inhibitors were designed to eliminate any life form reaching a
certain level of intelligence -- and they've targeted Humanity. War
veteran Clavain and a ragtag group of refugees have fled into hiding.
Their leadership is faltering, and their situation is growing more
desperate. But their little colony has just received an unexpected
visitor: an avenging angel with the power to lead mankind to safety --
or draw down its darkest enemy.
And as she leads them to an apparently insignificant moon light-years
away, it begins to dawn on Clavain and his companions that to beat one
enemy, it may be necessary to forge an alliance with something much
worse . . .
"Absolution Gap is a good as it gets, and should solidify Alastair
Reynolds' reputation as one of the best hard SF writers in the field."
-- SF Site