"A disgraced ex-CIA operative must return to the field with only his ex-wife as his handler in this electrifying thriller from a former intelligence officer. A single well-placed American asset has kept Iran's secret uranium enrichment from hitting weapons-grade. For the last decade, a mild-mannered Iranian physicist has enabled a CIA hack into software controlling Iran's gas-centrifuge arrays. But now the saboteur has gone dark, off grid-and he's...