Prodigal Son by Gregg Hurwitz

As Orphan-X, Evan Smoak was trained to be a secret government assassin - until he quit.

As the Nowhere Man he's the guy to call if no one else can help. He'll save you.

But when a woman gets in touch claiming to be his mother, he can't know if his true family needs help or this is a trap.

Has Evan's past reached out to claim him?

Or is someone out to ensure he has no future?