This is the first time we see the inside of the fireplace entrance. Usually you see it from outside the fireplace or at the bottom of the stairs.
This is one of only two episodes where Felipe mouths a word while communicating. Usually he just uses his hands to sign without moving his mouth. The other episode was "Family Business", when he mouthed the word "Mother".
The flashback scene showing why Felipe became mute and how he came to live with the de la Vegas was originally used in the Season 1 episode called "Family Business".
Nitpick: The scene where the bandits attack the stage coach and murder the driver was the same scene used for an earlier episode "To Be A Man".
Goof: The drawing of the town is facing the camera. This makes it the correct angle for people watching the show, but upside down for Don Diego and Felipe who were supposedly using it to determine the gang's plans.
Goof: Felipe is wearing a white shirt when in the cave with Don Diego discussing the gang's plans that he overheard. Shortly after, when Zorro leaves the cave on Toronado, he is wearing a different shirt. (This is a scene that is reused several times throughout the series.)
Some of the flashback scenes from this episode showing why Felipe became mute and how he came to live with the de la Vegas are used again in a Season 3 episode called "The Word".
Goof: Michael Tylo's stuntman needed a wig. When Zorro cuts the girth on the Alcalde's saddle and causes him to fall, the blond Alcalde is abruptly a dark-haired man.
Goof: When Zorro, on the roof, pays the farmers' taxes to the Alcalde with a stolen bag of gold coins, he slices the money bag to let the coins fall down on the Alcalde's head. You can then briefly see a crew person's hand (at the bottom left corner of the screen) toss the emptied white money bag at the Alcalde's head. This cannot be Zorro's hand because Zorro wears black gloves.
Ignacio Carreno, who portrayed the impostor Zorro/old tinker (uncredited) was Duncan Regehr's stunt double during the series.
Goof: A common, inexpensive way to film night-time scenes was to use a blue filter for the lens and under expose the film.
When doing this you want to be careful that the scene is dressed to make it seem as if it were truly night-time. For instance, making sure outdoor lights are turned on, using night-time cricket sounds and making sure there aren't any birds flying by. (It's hard to see birds at night!)
Sometimes though, what is captured by the camera is beyond control. In the supposedly night-time scene where Zorro is on the rooftop with a telescope watching Ricardo Cortez leave, you can see two birds flying behind him! Oops!
Goof: When Zorro tries to escape from the Alcalde's office he opens the door and two soldiers shoot at him. He closes the door and the shots go into the door about halfway up. Then, when the second soldier comes in shooting there are no holes on the outside of the door! This is possibly explained that the door used in the shot was not the actual Alcalde's office door. It is common to have another filming team, usually called the "second unit," to film such expeditionary shots like the bullets hitting the door.