Twilight's Last Gleaming

The launch of an Iranian satellite sets in motion a dizzying chain of events as intelligence analyst Naomi Hendricks races to prove it is a nuclear weapon built with help from North Korea, and is just hours away from unleashing an electromagnetic pulse against the United States, throwing the country into a prolonged nationwide blackout.

With time running out, Hendricks' theory is center stage in a Situation Room briefing that is spiraling out of control as the president, cabinet members, and...