B.R. Stateham 
There Is No Johnny [EPUB ebook] 

Is Smitty a professional hitman? A spy? A private detective? A protector of the weak and innocent?

No one knows. But whatever Smitty is, know that he is very good at whatever hat decides to wear that day. These twenty-six short stories feature the anti-hero as he seeks out his prey with ruthless determination.

When Smitty finds his target, they should pray that they’re not in his gunsights. Because if they are, it’s guaranteed they will not see the next sunrise.