Michael Kelly-a man shackled by duty-is hell-bent on taking down Boston's most untouchable gangster. His adversary? Connor Walsh, the brutal Irish mob boss who has dominated the city's underworld, untouched and unchallenged, for decades. Kelly is no stranger to danger. This mission, to dismantle the kingpin's empire from the inside out, requires him to shed his badge, cross the blue line, and plunge headfirst into...