Prodigal Son - Gregg Hurwitz
The astounding sixth novel from Gregg Hurwitz featuring Evan Smoak - Orphan X aka The Nowhere Man
As a boy, Evan Smoak was pulled out of a foster home and trained off-the-books as a government assassin, codenamed Orphan X.
Forced into retirement, Evan Smoak gets an urgent request from someone he never expected - his mother. She needs his help protecting Andrew Duran, a man in the wrong place at the wrong time, with no safe place to hide. Running from a brutal assassination team, Duran's only hope lies with Evan.
But when a hidden cabal catches on to what Evan is doing, everything he's fought for is on the line - including his own life.