Out Of The Dark by Greg Hurwitz

This is Jason Bourne meets Jack Reacher - a fast-paced thriller chock full of dirty Washington politicians faced off against the secret orphan assassins they helped to create. Evan, known as Orphan X, is a smooth-talking nice guy with a big heart and a big gun who must stop the President before he wipes out all trace of his involvement with the secret program and all of the participants. There are an equal number of good guys vs. bad guys action plus some unlikely heroes. This, as in the other Orphan X novels, is a solid thriller that keeps you on the edge of your seat rooting for the good guys.