Unorthodox but troubled cop Molly McGee leads an investigation into the murder of an unidentified woman. To solve the case, Molly has to team up with Alex OConnell - a man she hasnt spoken to in twenty years - and they discover that the murder has links to a historic cold case and unnatural circumstances. What begins as a routine investigation exposes something more insidious, and to catch the killer, Molly and Alex have to face the ghosts of their past.