Lewis passed away in Los Angeles on 30 October (10).
He began his career as a producer on U.S. TV series The Doctors and the Nurses and eventually moved on to write popular programmes including The Streets of San Francisco, Barnaby Jones, Baretta, Hawaii Five-O and In the Heat of the Night.
In 1978, he joined the production team behind hit series Dallas, first serving as executive story editor and then supervising producer, working on the series' famous Who Shot J.R.? episode in 1980 - the highest-rated TV episode in history at the time.
Lewis also wrote 1990s TV films Dallas: J.R. Returns and Dallas: War of the Ewings.
He is survived by his wife, Marjorie Estelle, a son, a brother, a granddaughter, a great-granddaughter and a step-son.
Television movie reunion of the characters from the television series "Dallas." J.R. Ewing schemes and manipulates anyone who gets in his way as he pursues his quest to regain control of Ewing Oil. J.R.'s brother Bobby and his ex-wife Sue Ellen now run Ewing Oil, though Bobby would be more content running Southfork, the family ranch. J.R. now heads Weststar, the largest oil company in Texas, which used to be run by his rival Carter McKay. Sue Ellen wants to bring Carter into Ewing Oil, an issue upon which she and Bobby disagree. Carter has found an untapped oil source that could push Ewing Oil back to the top of the field, but J.R. discovers that the secret stash belongs to his half-brother, Ray Krebbs. J.R. believes he can use the dissension between Bobby and Sue Ellen and the knowledge of his half-brother's stash of oil to reclaim Ewing Oil.