When a woman is found murdered in the marshes near Pawleys Island, suspects and motives prove elusive as Deputy Alex Frank leads the investigation to find the killer. A quirky new neighbor next to Hanna's beach house on Pawleys Island, and a new partner for Alex with a troubling past, raise the tensions as the murder case remains unsolved and the body count begins to rise. With fears that a serial killer is on the loose in the Low Country, Sheriff Pepper Stokes calls in the FBI to assist. An FBI profiler is assigned and dives deeper into the troubling investigation. As Hanna is caught up in representing a friend in a tough divorce case, Alex's father, Skipper Frank and his wife Ella, add to the drama and chaos as their always rocky relationship faces new challenges and ultimatums. And Hanna's former friend, Grace Holloway, seeks to work her way back into Charleston society and leaves a cluttered path of devastation behind her.