Redemption (boyxboy) (18+)

Nathaniel Angelev is a gritty, battle-hardened mafia prince who seemingly has it all - money, power, and devastatingly good looks - even though he's sacrificed a lot along the way. But the final straw isn't the knife fight that renders him mute; it's the one that forces him to take the life of his closest friend. So Nate leaves his legacy of blood and gunpowder, determined to turn state's witness and dismantle the entire organization that has caused so much pain. And he finds himself headed straight into the arms of Marshal Reid Logan, a man secretly running from a past of his own. 
But the usual witness protection placements fail, over and over, and after an especially close call, Reid realizes that there must be someone inside of the Marshals Service working against them. Their only option is to send Reid's partner back in to hunt the mole inside of the agency, while Reid and Nate go off the grid and hit the road together. They're constantly on the move, fighting both Nate's fearsome family and their growing attraction to one another. The Angelev specter of danger is ever-looming, leading to numerous close calls and showdowns, with the stakes climbing even higher after Reid and Nate give in to their fierce passion for one another. They come to realize what's truly worth fighting for and learn that love can grow even in seemingly impossible circumstances. *****contains language, violence, sexual content, and other things of a mature nature***** (Originally posted - in a very different form - as Destiel fanfic)