Jack Ryan, Jr. has faced death before, but sitting at the bedside of a college friend who is wasting away from cancer is almost more than he can endure. When the man asks Jack to scatter his ashes on a beloved hillside in Chile, of course, the answer is yes. The first hint of trouble comes when an ex-pat, former US Army Ranger tries to warn Jack off. Then a group of thugs break into his room, beat him, and warn him to leave. They don't know Jack....

-- New York Times A massive data breach has compromised the personal information of millions of American military officers and intelligence agents. After several deadly attacks on off-duty personnel and their families, President Jack Ryan faces one of the greatest challenges of his career. Can he find the hackers and cap the flow of information before it’s too late?

On a routine intelligence gathering mission in Tehran, Jack Ryan, Jr., has lunch with his oldest friend, Seth Gregory, an engineer overseeing a transcontinental railway project. As they part, Seth slips Jack a key, along with a perplexing message. The next day Jack is summoned to an apartment where two men claim Seth has disappeared--gone to ground with funds for a vital intelligence operation. Jack's oldest friend has turned, they insist. They leave...