Working alongside local law enforcement, the groundbreaking investigative series follows prosecutor Kelly Siegler and her rotating team of seasoned detectives Steve Spingola, Tonya Rider and Abbey Abbondandolo as they travel to small towns to dig into unsolved homicide cases that have lingered for years without answers or justice for the victims. Bringing fresh eyes, valuable resources and key experts, Kelly and her team have an unparalleled success rate and helped bring two arrests this season.