I've just found that episode online and watched it. Compared to shows that came only a couple of years later, it looks so dated.
I knew I recognized the bad guy Brother Love (Eddie Albert) from somewhere, and looking through his filmography, I realized it was the feature length pilot of 'The Fall Guy'. He played Big John Cramer, a corrupt Arizona sheriff who knocks a boy off his bike in Hollywood and then jumps bail when he's told that the boy has died. The episode also had a couple of familiar faces from Dukes. Kathrine Baumann, one of the car strippers from 'Arrest Jesse Duke', had a bit part as a woman who Colt and Howie question briefly, and Dennis Fimple, the preacher from 'Daisy's Shotgun Wedding', played the lead deputy.