Silent Joe by Jefferson Parker
Atmospheric, complex and intelligent psychological suspense from the bestselling author of The Blue Hour and Red Light
With the horrible remnants of a childhood trauma forever visible on his face, Joe Trona is scarred in more ways than one. Rescued from an ophanage by Will Trona, a charismatic Orange County politician who sensed his potential, Joe is swept into the maelstrom of influence and intimidation that surrounds his adoptive father's illustrious career. Serving as Will's right-hand man, Joe is trained to protect and defend his father's interests - but he can't save him from his enemies. Will Trona is murdered, and Joe will stop at nothing to find out who is responsible.
Sifting through his father's life - acquaintances, deals, enemies and lovers - looking for clues, Joe comes to realize how many secrets Will Trona kept, and how many people he had the power to harm. But two leads keep rising to the surface: a little girl who was kidnapped by her mentally disturbed brother, and two rival gangs who seem to have joined forces. And as Joe digs deeper, he is forced to confront his own childhood abuse as the different threads of the investigation begin to intersect.