NBC News correspondent Stephanie Gosk and Emmy Award winner Troy Roberts focus on the reasons why a particular killing occurred and explore how investigators uncovered the motive in order to crack the case. From a staged suicide to a family massacre, Gosk and Roberts strive to understand each crime’s motive and to shed light on what drove the killers. They conduct on-the-ground inquiries, returning to the crime scenes and sitting down with victims’ friends and family, law enforcement, attorneys, psychologists and even the killers themselves to uncover the story of how justice was sought and ultimately attained. At the core of their investigative reporting is the pursuit of a deeper understanding of the relationships behind the horrific killings and of the psychology of the people who committed them.