The alternate timelines of Charles Stross's Empire Games trilogy have
never been so entangled as in Invisible Sun, the techno-thriller
follow up to Dark State, as stakes escalate in a conflict that could
spell extermination for humanity across all known timelines.
Two twin worlds are waiting for war. America is caught in a deadly arms
race with the USA, its high-tech, parallel world. Yet it might just
self-combust first. For its president-equivalent has died, leaving a
crippling power vacuum. Without the First Man's support, Miriam Burgeson
faces a paranoid government opponent who he suspects of scheming to
resurrect the American monarchy. And Miriam is indeed helping the exiled
American princess. This is only to prevent her being used against
America, but her rivals will twist anything to ruin her.
However, all factions will face a disaster bigger than anything they
could imagine. In their drive to explore other timelines, high-tech
America has awakened an alien threat. This force destroyed humanity on
one version of earth--and if they don't take action, it will do the same
to both America and the USA.