Overview:Missouri, December 1984. St Louis Police are called in when a farmer discovers the body of a young man, Sean Cavaness. He's been shot twice in the head and left to die at the side of the road. Investigators immediately begin searching for leads to uncover who could have murdered the man and are shocked when they realise that their prime suspect is none other than the victim's father, Dr John Dale Cavaness. 'Dr Dale' as he's known has established himself as a hero in his hometown of Eldorado, Illinois where he regularly offers his medical services for free to those unable to pay. Locals cannot believe that this charming and kindly doctor could be capable of murdering his own son. But when police delve into his past, they reveal a shocking history of violence and a desperate doctor, battling with financial problems.