Order of the Dragon.

In a world teetering on chaos, elite assassin John Rico is the go-to solution when the government wants threats removed-quietly and permanently. But when a mission goes sideways, he's given one last shot at redemption: track down and eliminate Mason Ryker, the final ghost of the feared underground unit known as The Order of the Dragon. As Rico's mission leads him to a small, danger-ridden town in Serbia, the lines between good and evil begin to blur. Is Ryker the monster he's made out to be, or is there a deeper conspiracy at play? What begins as a black-and-white hit spirals into a moral storm-and time is running out.