Description from Google Books:

An undercover CIA officer has seven days to save her country--and her family--from the world's most dangerous double-agent. The CIA's highly classified Special Activities Division is in the business of tracking people down and keeping secrets hidden. Then a botched field operation reveals some dark dealings between an officer's superiors and an informant, dealings she's not supposed to know about. And a plot that could kill thousands of Americans. Including her husband and daughter. Knowing that her leadership is corrupt to the core, she is forced to give up her identity and to work from the shadows. But it's not easy staying hidden when your enemies are elite intelligence operatives. Will she get the truth out into the light before losing her identity, her history, her family? The countdown has already begun.

Snippet from Google Books:

Amy Cornwall has 5 days to save the world, 4 days to save her family. . . James Patterson's most riveting thriller since The Black Book.

Description from Harvard Library:

"Agent Amy Cornwall excels at working from the shadows--until a botched field operation reveals dark dealings between her bosses and an informant. And a hidden plot by a terrorist genius that could kill thousands of Americans. Among them: her husband and daughter. She has to go dark. The Division wants to erase her. And they know every detail about her identity, her history, and her family. Agent Cornwall's countdown has begun"--