text: Leonard Katzman had been a part of season 1 as producer, and during season 2 his influence increased, as he began writing and directing episodes. Series creator David Jacobs left his day-to-day duties as executive story consultant at the end of season 2, in order to focus on the production of spin-off Knots Landing. The executive producers of Dallas in the first 3 seasons were Philip Capice and Lee Rich. During the first 8 seasons of the show, Dallass production team remained basically intact (the main exception being Rich's leaving after season 3). After Lee Rich's departure, Philip Capice served as the sole executive producer, Leonard Katzman as producer and showrunner, Cliff Fenneman as associate producer, and Arthur Bernard Lewis as executive story editor/supervising producer. And, although 25 writers contributed with scripts, the trio of Katzman, Lewis and David Paulsen wrote nearly two-thirds of the episodes during these first eight seasons. Paulsen had joined the show during the season 4 and was promoted to story editor for season 6. Notably, the three of them wrote every episode but two during seasons 7 and 8.
  Season 9
  Creative conflicts between executive producer Philip Capice and producer Leonard Katzman led to Katzman leaving the show at the end of season 8. Although Katzman was to continue writing for the show during season 9 and also acted during this season as "creative consultant" (which meant he was sent copies of all scripts and asked to give his input), Capice decided to bring in a new production team: joining him and associate producer Cliff Fenneman were James H. Brown as producer and Peter Dunne as supervising producer/showrunner, executive story consultant Joel J. Feigenbaum, and story editors Hollace White and Stephanie Garman.
  However, increased production costs and the claim of decreased ratings (though the accuracy of this has been disputed) caused production company Lorimar to persuade both Patrick Duffy and Leonard Katzman to return. As season 9 came to a close, Katzman was on board to return as showrunner for the following season and the season finale saw Patrick Duffy inexplicably resurface on screen.