First episode not to originally air on Saturday.
Roger Ewing is no longer a regular cast member.
The cast list in the end credits now starts with the episode's guest stars, without the main stars. At the very beginning of the show James Arness is still named first "as Matt Dillon" by the announcer, then the series' stars are listed in the opening credits following the opening "teaser" scenes.
All episodes now include onscreen titles. Previously, only 2-part stories, such as "The Raid", "Nitro", and "Extradition" had onscreen titles.