With the CIA's Moscow Station now paralyzed by the catastrophic intelligence failure, Stansfield seeks help from Mitch Rapp, a newly minted assassin in the secretive Orion program. But Rapp has problems of his own: when his Swiss girlfriend Greta's grandfather receives a box containing the head of a former Cold War comrade along with a note promising that Greta's head will be next, Rapp finds himself on the frontlines in a war between the American and Russian intelligence services. To protect the woman he loves and save the CIA from destruction, Rapp must be willing to risk everything.