Probably the same person who SHOT J.R.
Ms Ellie
The person who pulled the trigger was revealed to be Kristin Shepard (Mary Crosby) in the "Who Done It?" episode which aired on November 21, 1980. Kristin was J.R.'s scheming sister-in-law and mistress, who shot him in a fit of anger. J.R. did not press charges, as Kristin claimed she was pregnant with his child as a result of their affair.
NEW DALLAS
The Ewings and Pamela Barnes succeeded in pinning J.R.’s murder in Mexico on her father, Cliff, by planting a replica of J.R.’s stolen belt buckle in Cliff’s safe deposit box and the murder weapon ― Cliff’s gun ― in the trunk of his car. Of course, Pamela, Christopher, and John Ross all believed Cliff was guilty at the time, but it turns out Bobby knew he wasn’t. Later, at J.R.’s grave (“The only deal he ever lost,” his tombstone reads), Christopher and John Ross forced Bobby to read the letter from J.R. that Bobby had received after J.R.’s death: “Bobby, doctors say I’ve only got a few days left,” it began. “Damn cancer.” J.R. was dying and didn’t tell anyone because he detested pity. To protect the family from Cliff, he wanted to help end the Ewing/Barnes feud once and for all. He knew Cliff went to Mexico every year for a marlin fishing tournament. J.R. had asked Bum, his right-hand man, to steal Cliff’s gun. The letter referenced a time when J.R. had framed Bobby as the one who’d borrowed their daddy’s favorite shotgun by putting extra shells in Bobby’s room. J.R.’s masterpiece was framing Cliff for murder.
Bobby broke down reading the letter, so Christopher continued: J.R. hoped Bobby knew that his love for him outweighed his jealousy. “Goodbye, baby brother; I guess I’ll be duck huntin’ with daddy. I’ll tell him I was the one who borrowed his gun,” J.R. wrote. If you weren’t tearing up then, Josh Henderson’s broken delivery of John Ross’s response definitely got you: “I’m sorry, I’m confused. Who shot my father, Uncle Bobby?” he asked. “I shot your father, John Ross,” Bum confessed. We flashed back to Bum entering J.R.’s hotel room in Mexico. J.R. only had a few days left to live and asked Bum to do it. J.R.’s final act was one of love for his family and his son, Bum told John Ross.
Kristina sue Ellen's sister jr had been having sex with her.
In the old Dallas it was His sister-in-law, Kristin Shepard. ( Sue Ellen sister).
In the new Dallas it was JR right hand man "Bum" who shot and killed him.
The Dallas now it was Burn.
