Jonathan Harris, surprisingly, is not very effective as Zeno the outlaw. Since Zeno looks exactly like Dr Smith, there is (naturally) confusion as to who is who. Dr Smith is pursued by the Space Enforcer (played by a miscasted Allan Melvin), while Zeno poses as Dr Smith. Amazing, that Zeno's mannerisms didn't tip off anyone that he couldn't have been Dr Smith. Only the Robot saw something wrong with the picture. As Zeno, Harris was too stiff. I could understand why he was flirting with beautiful Judy, but even that wasn't convincing. The "western" stuff was completely ineffectual, with more actors that were miscasted. The episode must, however, hold the record for the phrase "pussycat" being repeated the most times!