Dark Sight - The Dark Sight Series, #1

Three months until humanity is annihilated. That's what Allegra Damascus's visions tell her. Seeing into the future should have been awesome. Instead, it's all blood, horror, and the end of the world. Worse, discovering her true identity as a descendent of the famed Oracle of Pythia puts Allegra squarely in the government's sights-and the New Germanic States will stop at nothing to control her newfound power.
Maximus Vissarion offers Allegra safety from deadly attackers, killer storms, and worse. But once he starts questioning his own general's motives, Max realizes that not only the world but also his heart are on the line. And he's not even certain where his loyalties lie. Allegra's Dark Sight is the key to saving the world-but only if they can find the right lock. The clock is ticking. Three months to figure it out, or everyone dies.