Adventures of Superman

This is the first episode of season three. Also the very first color episode. The plot was ok but strange. The Daily Planet crew & crook plus professer get sent back to stone age. They are sent back cause of a device the professer built. Now they must find a way back to present time. The crook wants to stay so he dont have to go jail. Even though he was gonna give him self up. He decides to go back when he gets some diamonds. They turned out to be some worthless stones. Also Superman helps them get back with the metal they needed. To cover up Clark says Superman can now get back since he touched the metal. They all get back in the end. I just thought it was allright. Just a so so plot. It was cool to see in color for first time. Could of been a better episode though.