A Cold Case in July

Who shot Attorney Adam Cranford?
On a hot Fourth of July night, crowds filled the streets of a small rural Georgia town and fireworks exploded overhead. Adam Cranford sat at his office desk waiting on a visitor. Someone stepped inside and aimed a single, accurate deadly shot at Adam's head.
Was it his political opponent for his incumbent seat on the county commission? Was it his gentle wife who never argued until the day before he died and moved out of the house? Was it the law partner who loved the widow from afar and disapproved of Adam's ethics? Was it one of Adam's criminal clients whom he was blackmailing? Or was it an unknown person to the small town?
Four years later, the killer is still at large. A new political race for the upcoming election brings accusations between two of the county commission candidates and against the police. Tired of innuendos against his department, Sheriff Tagger hires former Atlanta homicide detective, Derek Fielding, to reopen the case, put the rumors to rest, and find a murderer.