Payback Jack - Hawaii Adventure, #5

Retired Naval crime investigator, Jack Murphy, longs for nothing more than a quiet respite on his boat, a cold brew in hand, far from the maddening crowd. But fate has a twisted sense of humor, as a small Hawaiian town becomes a breeding ground for ruthless murders that defy reason. In the face of a gutless District Attorney who turns a blind eye to justice, Jack embarks on a relentless quest to seek retribution for his fallen friend, left alone to navigate the treacherous waters of a corrupt system. Years of witnessing the well-heeled walk free, evading the consequences of their vile deeds, have stoked an inferno of pent-up fury within Jack.
Now, that seething rage is primed to erupt, like molten lava from a dormant volcano. Left with no recourse, Jack Murphy finds himself with a singular mission: to wield the sword of justice that society has long denied him, to make the privileged pay the toll they owe. In this high-stakes battle against the untouchables, there are no other cards left to play. Jack must shed the trappings of law and order, embracing the role of a lone avenger, a force to reckon with.
As the storm clouds gather and the tempest of vengeance brews, Jack Murphy prepares to unleash his own brand of justice upon the unsuspecting elite, no matter the cost. This is book 5 in the series and can be read as a standalone. It's a complete story and there is not a cliff hanger.