Mitch Rapp returns in the #1 New York Times bestselling series in this timely thriller as a Saudi prince is discovered using his fortunes to fund ISIS, re-opening secrets about the Saudi government's involvement in 9/11--secrets which the United States tried to bury. In Flynn's latest "thriller in which the pages seem to turn themselves" ( Book Reporter), Mitch Rapp is given a dangerous mission by the President himself: find out which high-level Saudis are involved in funneling money to ISIS and kill them. The catch? Rapp will get no support from the United States in this endeavor. Rapp therefore makes a decision that will change his life forever--he quits the CIA to avoid involving his men in something this illegal and decides to assemble a group of independent assassins to complete the mission. What they discover is a tangled web of allegiances leading back to the head of Saudi intelligence. But in the search for truth and justice, Rapp himself is discovered. Soon the Saudis and Americans are forming a joint task force to stop him, supported by the President, who denies his involvement, just as he warned he would if Rapp's actions became known. Will this mission prove to be Rapp's final one?