A Sullivan County Man Accused Of Killing A Washington County Couple, Has Been Appointed A New Attorney. 33 Year Old Derrick Sells Will Now Have Steve Finney To Represent Him, Instead Of Assistant Public Defender Bill Francisco. Francisco Cited A Possible Conflict Of Interest. Sells Is Charged With Three Counts Of First Degree Murder, Felony Murder, Aggravated Robbery And Two Counts Of Aggravated Child Abuse/Neglect. 23 Year Old Kyanna Vaughn And 25 Year Old Robert Vaughn Were Shot To Death At Their Mobile Home December 4th. Kyanna Vaughn Was Seven Months Pregnant At The Time. Sells Remains Held On A One Million Dollars Bond. He Will Be Back In Court On April 16th.