David Jacobs Creator, Executive Producer Michele Lee Karen Fairgate MacKenzie Actor Joan Van Ark Valene Ewing Gibson Waleska Actor Ted Shackelford Gary Ewing Actor Donna Mills Abby Cunningham Ewing Sumner Actor Constance McCashin Laura Avery Sumner Actor Kevin Dobson M. "Mack" Patrick MacKenzie Actor William Devane Gregory Sumner Actor Pat Petersen Actor Steve Shaw Actor Tonya Crowe Olivia Cunningham Dyer Actor Julie Harris Lilimae Clements Actor Doug Sheehan Actor Teri Austin Jill Bennett Actor Nicollette Sheridan Actor Michael Filerman Executive Producer Mary-Catherine Harold Producer