The Gray Man - The US bestseller series. Killing is his business. Four years ago, Court Gentry, the Gray Man, was betrayed by his contacts at the CIA - since then, he has been making a living as a private contract killer. However, his latest mission presents him with a difficult challenge: His client, a Russian arms dealer, demands the head of Sudanese President Abbud, who is responsible for the genocides in Darfur. His former bosses, on the other hand, are pressuring Gentry to extradite the politician to the International Criminal Court. Gentry's moral dilemma must wait as an adversary from the past emerges and threatens his life. James Rollins: "A Bourne for the new millennium." Lee Child: "Tough, fast-paced, relentless - just how a thriller should be.".