Detective Mike O'Shea is spiraling—consumed by painkiller addiction, alcohol, and the crushing weight of unresolved grief. As his personal demons threaten to take control, he’s pulled into a chilling case: a woman is found dead, her son rotting beside her, discovered only when neighbors are alerted by the unbearable stench of decay.

Meanwhile, O'Shea’s obsession with the killer of his former partner, Sal, continues to haunt him. The elusive murderer has evaded justice for years, but O'Shea has always suspected something more—an untold truth buried beneath the surface. As he digs further, he uncovers a terrifying reality: the killer’s freedom isn’t just a coincidence—it’s the result of high-level corruption that runs far deeper than he ever imagined.

As the conspiracy begins to unravel, the threat intensifies, drawing in those closest to O'Shea. Detective Sergeant Amanda Black, one of the few who knows the whole story, becomes the target of an assassination attempt. With her pending promotion and O'Shea’s growing addiction-fueled paranoia, he starts to wonder if he can still trust her—especially if she’s crossing over.

Haunted by years of policing that have left him physically and emotionally scarred, O'Shea is worn down by the weight of it all. Torn between his duty and an overwhelming sense of exhaustion, he struggles to hold on as the stakes rise and the lines between right and wrong blur. He must decide whether to keep fighting—or walk away, knowing the cop killer who took Sal’s life still roams free.