Sean Branch is no longer a man-he's a weapon. After the brutal murder of his daughter, the fragile threads tethering him to sanity have snapped. Grief turns to vengeance as Sean embarks on a relentless hunt for her killers, unleashing the kind of violence only a father's fury can summon. Old scores blur into fresh wounds, and now no one-not even blood-can be considered safe.

Quran Bashir thought he could walk away. He traded silencers for silence, laying low in hopes the streets would forget him. But murder has a long memory. Quran's past refuses to stay buried-and this time, it's not just the law closing in. It's personal.

Zin Carter is a legal powerhouse. Torn between Quran, the father of her unborn child, and the legacy of her late mother, Zin is forced to confront a painful truth: not all justice happens in a courtroom.

Meanwhile, Michael Carter prepares for a final showdown of his own. But powerful enemies from his past want him silenced for good. To survive, Michael will have to decide what he's willing to become to stay alive.

IF YOU CROSS ME ONCE could be a warning, or it could be a lesson about betrayal at its worst. In part 6, the past isn't just back-it's weaponized.