Trouble at Ewing 23 When Ewing 23 receives a bomb threat, the incident gives J.R. an opening to take back control of Ewing Oil. Meanwhile, Ray reels from the shocking news that he is Jock's son and worries that Donna is slipping away from him. Details Casts Title Trouble at Ewing 23 Genres Soap Drama Family Release Date 1980-12-19 Episode Runtime 00 Hours 45 Minutes Season Number 4 Episode Number 8 Production Companies Patrick Duffy Bobby Ewing Barbara Bel Geddes Miss Ellie Jim Davis Jock Ewing Linda Gray Sue Ellen Shepard Ewing Larry Hagman J.R. Ewing Ken Kercheval Cliff Barnes Susan Howard Donna Culver Krebbs Victoria Principal Pamela Barnes Ewing Charlene Tilton Lucy Ewing Steve Kanaly Ray Krebbs