Don Marshall

He was in some movies called The Big Clock, Love Story, Escape from Witch Mountain, Frogs, and of course, The Ray Moland Show.

And then we have Don Marshall, who plays Dr. Williams.

He was in Terminal Island, some episodes of Bewitched, episodes of Dragnet, Good Times, The Bionic Woman, and The Incredible Hulk.

We have Roger Perry, who plays Dr. Desmond.