Gregg Hurwitz Lone Wolf: An Orphan X Novel

Once a black ops government assassin known as Orphan X, Evan Smoak left the Program, went deep underground, and reinvented himself as someone who will go anywhere and risk everything to help the truly desperate who have nowhere else to turn. Since then, Evan has fought international crime syndicates and drug cartels, faced down the most powerful people in the world and even brought down a president. Now struggling with an unexpected personal crisis, Evan goes back to the very basics of his mission - and this time, the truly desperate is a little girl who wants him to find her missing dog.