On the morning of June 20, 1994 police in Dunedin, NZ responded to an emergency call placed by 22-year-old David Bain that eerily proclaimed, "They're all dead." Upon arriving at his home, authorities soon discovered a massacre that left the other five family members deceased, seemingly a result of a murder-suicide carried out by patriarch Robin Bain. Yet, as the investigation began, it quickly became apparent something wasn't right with this crime scene. Before long, David Bain was arrested, charged with the murders, and convicted. After spending nearly fourteen years in prison, however, a successful appeal led to a second trial that set him free. In the aftermath, the public is forever left to wonder what really happened on that fateful morning. Join host Ryan Kraus for an extensive psychological exploration of the crime scene and suspects to determine, once and for all, who killed the Bain family: Robin ... or David?