Falling like a stone from six miles up, a brand new C-500 crashes in central France, killing two pilots aboard. When French officials take over this highly public investigation, they call in the best there is: they call Frank "Jammer" Davis.

A retired U.S. Air Force fighter pilot, Davis is part of the NTSB's "go-team". With a reputation for getting things done - and for steamrolling anyone who gets in his way - Davis starts to dig.

Sarah Ridgeway is living the life she’s always envisioned. She has a devoted husband, a loving daughter, and a comfortable home. The path to reach it, however, has not always been smooth. For twelve years her husband, Bryce, served in the Army, deployed to some of the world’s worst trouble spots. After his service ended with a combat injury, the future had seemed precarious, but with Sarah’s support and that of his wealthy family, combined with his exemplary service record, he is elected to Congress.

Nobody has ever heard of ODIN. ODIN is about as secret as a government agency can get. Because within ODIN there is General Operations, which speaks for itself; ODIN 5i, which deals with intelligence gathering; and then there is ODIN 1i, which deals in operations so sensitive not even the CIA can touch them. All three are run with an iron first by The Chief, a giant with a gigantic IQ. His top agent is Alex Mason. But when an ODIN 5i agent based at the US Embassy in Manila goes missing and his encrypted laptop disappears with him, the whole ODIN structure is put in peril.

A master assassin craves one thing above all else: a normal everyday life. Trained to be a killer from the age of 11, Peter has never known the things the average person takes for granted. He has always been an asset. Burned by the CIA and now occupying their secret hit list, he works overseas as a Ronin, living a solitary life in hiding. But someone knows where he is. A strange man arrives at his door offering Peter the chance of a real life. "Get this done and you can be free," he is told.

Court Gentry is known as The Gray Man—a legend in the covert realm, moving silently from job to job, accomplishing the impossible, and then fading away. And he always hits his target. But there are forces more lethal than Gentry in the world. And in their eyes, Gentry has just outlived his usefulness. Now, he is going to prove that for him, there's no gray area between killing for a living-and killing to stay alive.