Former Justice Department researcher Quinn Marlowe discovers the decomposing body of her friend Alicia at her seaside cottage. The last time she saw Alicia, she was incoherent, appeared to be suffering from a breakdown, and disappeared into a limo. Undercover US Marshall Huck McCabe is jogging by when she makes the grisly discovery and tries to aid her. And he continues to have a growing interest in her as she investigates the events surrounding Alicia's death, bringing her to the very people he is trying to link to a vigilante group headed by a wealthy CEO that was a victim of kidnapping.