Reed Walker, a CIA agent in Pisa, Italy, receives photos of two autos passing a train, and is told that terrorists attacked the train, carrying fissionable material, and killed all the guards. The images reveal nothing, but he learns there may be a mole in the CIA.

In the course of his investigation, he uncovers five possible moles. Then the killing starts.

Reed now races against time as international agents continue to fall. He sets up a snare and closes in, but has he really found MB? What will the collateral damage be? Will Reed Walker ever be accepted again by his fellow spies? Will his newfound love survive?