They later used a Julie stand-in in the Dr Cassandra episode later in the season.
This episode was filmed right after the Joker/Catwoman teamup and aired before this one, which makes her appearance in her kittycat car picking up Joker more of a surprise when you see Catwoman for the first time and see it isn't Julie. But since they aired this one first, it ruined the surprise. According to Casting Director Larry Stewart, Kitt was not hired because she was black, but because she spoke fluent French (from years of living in Europe). In the later episode, it was required for Catwoman to speak French to translate the Pirate's message. He told her to go into the audition (like Meriwether before her, Kitt had to audition for the part) speaking nothing but French. The line producers were not aware of who she was, and this was before her political anti-war stand and fight with President Johnson, so they hired her
Assistant Producer Charles FitzSimons: “We felt it was a very provocative idea, to hire Eartha Kitt. She was a cat woman before we ever cast her as Catwoman. She had a cat-like style. Her eyes were cat-like and her singing was like a meow. This came as a wonderful off-beat idea to do it with a black woman.”
The episode was tailored by Stan Ross for Kitt, to eliminate any of Julie's playful banter with Adam and just made the character a tough little bitch.
Alan Napier, “Julie Newmar was the best Catwoman, but Earth Kitt was kind of marvelous. She did bitch a lot on the set, though.”
Yvonne Craig “I thought Eartha was perfect because she was very catlike anyway. And I liked that she was my size. I could beat her up. I come up to Julie Newmar’s bellybutton. Not good in a fight.”
Catwoman's henchmen were played by James Griffith, appeared mostly in tv westerns and drama shows, including the Lone Ranger (as the Durango Kid), Little House on the Prarie, Boris Karloff's Thriller and as an army officer in the low budget film The Amazing Transparent Man. He was formally a musician with the Spike Jones Band.He died in 1993. Dirk Evans was a bit part/stuntman who disappeared in the 1970's
Austrian costume/clothing designer Rudi Gernreich who appeared as himself later designed those awful costumes for the Space:1999. He died in 1985.
Queen Bess's Karen Huston, was one of the last of the Fox contract starlets later married actor John Ericson and all but retired from acting. Her last appearance was in the 1988 horror film Night of the Demons, using the name Karen Ericson.
Alfred makes a nice turn as the world's oldest hippie, in another of his disguised characters this season.
Next the return of Egghead and Olga, in the second part of the previous two part team up that was cut and re-edited to air as a one part story.