Near Dark (Scot Harvath 19) by Brad Thor

Scot Harvath returns in the newest thriller from #1 New York Times bestselling author Brad Thor.
The world’s largest generosity has just been placed upon America’s top spy. His only hope for survival is to outwit, outrun, and outlast his enemies long enough to get to the truth.
But for Scot Harvath to accomplish his most dangerous mission ever—one that has already claimed the lives of the people closest to him, including his new wife—he’s going to need help—a lot of it.
Not knowing whom he can trust, Harvath finds an unlikely ally in Norwegian intelligence operative Sølvi Kolstad. Just as clever, just as lethal, and just as distinct, she not only has the skills, but also the broken, troubled past to match Harvath’s own.