La Playa Del Los Muertos by Douglas Pratt

Caleb Saunders was a killer—codenamed Corsair—working for a shadowy government office.
Until one day he vanished in the middle of an assignment.
Presumed dead, Caleb Saunders assumed a new role—father.
When a random crime steals that away, Corsair is unmasked.
Now, he's in hiding again, trying to find a new life.
But his enemies know he's alive, and they'll stop at nothing to make sure he dies with all his secrets.