Detective Lindsay Boxer and the Women's Murder Club make a courageious return for their fourth and most chilling case ever, one that could easily be their last. In a late-night showdown after a near-fatal car chase. San Francisco police lieutenant Lindsay Boxer has to make an instantaneious decision: in self-defensem she fires her weapon and sets off a chain of events that leaves a police force disgraced, and entire cit devided, and a family destroyed. Now everthing she's worked her entire life for hinges on the decision of twelve jurors. To excape scrutiny during breaks from her trial, Lindsay retreats to the picturesque town of Half Moon Bay. But soon after her arrival, a string of grisly murders punches through the peaceful community. There are no witnesses and there is no discernible pattern. But a key detail recalls a case Lindsay worked on as a rookie years before, an unsolved murder that has haunted her ever since. As summer comes into full swing, Lindsay and her firends in the Women's Murder Club battle for her life on two fronts: before a judge and jury as her trial comes to a climax, and facing unknown adversaries who will do anything to keep her from the truth about the killings including killing again...