A Greeneville Teen Accused Of Killing His Father And Then Fleeing To South Carolina Will Be Tried As An Adult. Zachary Thomas Blanchard Appeared In Greene County Juvenile Court Yesterday. He’s One Of Four Teens Who Took Off After The Shooting That Left Robert Blanchard Dead In His Home Back In April. 16 Year Old Shelby Riley Has Already Entered Guilty Pleas To Charges Of Theft Over A Thousand And Accessory After The Fact Of First Degree Murder. Two Other Defendants Are Charged With Accessory After The Fact.