re: On this day in 1967, 78 million people tuned in to watch the finale of The Fugitive

With them splitting the finale into two weeks, the fourth season had 30 episodes.

wiki/List_of_The_Fugitive_episodes

I guess they just re-ran the 1st episode the week after the 28th episode originally ran. They would have to show some episodes on other nights during the same week, because there's only 52 weeks in a year. I'm not old enough to remember how they programed reruns when their available content was so limited.