Invisible Sun

In this dystopian adventure, two parallel American worlds are engaged in a tense conflict, with one possessing advanced technology and both facing internal turmoil following a leader’s death. As political tensions rise, a greater threat emerges when the USA inadvertently awakens an alien force capable of destroying humanity. "Invisible Sun" is the concluding installment in Charles Stross’s Empire Games trilogy, set in a dangerous parallel universe that shares its backdrop with other series by the author.