The Boy Who Knew Her Secret: Part 2 - S3-E21
Continuity mistake: When the brown car speeds away, three bystanders walk towards the road, and one of them stares at the camera. (00:14:51)
Starring: Lynda Carter
The Boy Who Knew Her Secret: Part 2 - S3-E21
Continuity mistake: When the brown car speeds away, three bystanders walk towards the road, and one of them stares at the camera. (00:14:51)

Formula 407 - S1-E12
Other mistake: At the start, the episode's textbox reads, "Fort Frazier Ordnance Testing Facility" with correct spelling, but in the next shot the base's sign reads, "Fort Frazier Ordinance Testing Facility" when it should actually be "Ordnance."
Trivia: Jeannie Epper, Lynda Carter's stunt double's son, was bullied in school by his peers who didn't believe his mother played Wonder Woman. Lynda Carter heard this and invited them to the set.
Question: Why did they have three actresses playing Hippolyta? Scheduling conflicts with each one?
Answer: It is typical to recast non-regular cast members in a TV series, usually because they are no longer available or another actor was better suited for the part. Non-regular actors move on to other acting jobs during a series' run. Cloris Leachman, Carolyn Jones, and Beatrice Straight, who played Hippolyta, were well-known character actresses who were billed as "Guest Stars." Cloris Leachman was only in the show's pilot episode and was on the Mary Tyler Moore Show. Carolyn Jones played Hippolyta during Season 2, then was cast in the TV mini-series "Roots." Beatrice Straight played Hippolyta in the final season.
Answer: The first actress, Cloris Leachman appeared in the TV movie which ended up being the pilot for the series. At the time, Leachman was already starring in her own TV series "Phyllis" (a spin off her role in "The Mary Tyler Moore Show"). This was actually the 2nd TV movie meant to be a pilot and the first one wasn't picked up. It's likely she thought the show would be picked up. After season 1, in which Carolyn Jones played the role, ABC was slow to make a decision to pick up the series for season 2 and CBS picked up the series. When CBS picked up the series, they changed the time setting of the show and replaced all the actors, with the exception of Carter and Waggoner (with Waggoner playing a different role technically), resulting in Beatrice Straight being cast.
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