Agent X

In this espionage thriller from a New York Times–bestselling author, a former FBI agent hunts down an elusive Russian Spy.

The follow-up to Noah Boyd's debut thriller The Bricklayer—basis for the movie starring Nina Dobrev and Aaron Eckhart.

Ex-FBI agent Steve Vail is looking forward to a well-earned and romantic New Years Eve in Washington, DC, when he quickly finds himself knee-deep in a very complicated and unusual case.

A man known simply as Calculus has approached the FBI claiming he has a list naming several Americans who are supplying confidential government information to the Russian secret service. All he asks in exchange for the list is a quarter of a million dollars for each traitor the FBI nabs. But then Calculus informs the FBI that he's been recalled to Moscow, and the Bureau suspects the worst: the Russians are onto him, probably have access to his list, and will be after the traitors unless the FBI can find them first.

The FBI knows they have to stay one step ahead of the Russians, and, without knowing exactly who is on the list, keep the operation quiet. Once again, Vail is their man. He's the perfect guy for this kind of under-the-radar investigation. But finding Calculus and his list of turncoats isn't going to be easy. In fact, it's going to be downright deadly.

"We have a new American hero in Steve Vail." —Patricia Cornwell

"Vail is in the mold of Lee Child's Jack Reacher and Robert Crais's Joe Pike. . . . This guy has movie written all over him." —Chicago Sun-Times