Testimony Will Resume In Sullivan County Criminal Court In The Trial Of A Bristol Man Accused Of Killing Three Family Members. Robert Denton Is Charged With Three Counts Of First Degree Murder In The Shooting Deaths Of His Mother, Stepfather And Grandmother In 2015. Denton’s Grandfather Testified Yesterday That He Retrieved A Gun With The Intention Of Killing His Grandson. Prosecutors Say If Denton’s Convicted, They Will Seek Life In Prison Without The Possibility Of Parole.