Terror in New York City - S1-E4
Trivia: When Thunderbird 1 touches down to land in New York City, look at the centre of the screen and you can see a brown building with a giant Swastika on it.
Trivia: When General Bron speaks to the Hood by radio after he crashes his van into the river, his voice sounds like an Aquaphibian from "Stingray".
Trivia: This is the only episode in which we see John Tracy taking part in a rescue.
Pit of Peril - S1-E2
Trivia: When Thunderbird 1 leaves at the end of the episode, its booster rockets set fire to a small tree.
Terror in New York City - S1-E4
Trivia: This episode marks the first on-screen appearance of Thunderbird 4.
Trivia: The shot of the third elevator car swerving out of control was initially filmed by accident. Derek Meddings (Special Effects Director) liked the shot so much that he convinced Gerry Anderson to write the scene into the episode.
Terror in New York City - S1-E4
Trivia: In the 1980s, this episode and "Atlantic Inferno" were edited together to form the compilation film entitled "Countdown to Disaster".
Pit of Peril - S1-E2
Trivia: This is the only episode where none of the series' female characters appear.
The Perils of Penelope - S1-E3
Trivia: When the violinist is playing next to the table that Alan, Lady Penelope and Sir Jeremy Hodge are sitting at the cafe in Paris towards the end of the episode, look behind Lady Penelope and you can see Camp from the episode "Sun Probe."
The Perils of Penelope - S1-E3
Trivia: The launch of the Sun Probe at the start of the episode is the same event that was seen in the flashback at the start of "Sun Probe". The events of that episode take place one week after the launch, so this episode takes place immediately before. Indeed, this episode and "Sun Probe" can be viewed as the series' only two-part story, although they have never been broadcast as consecutive episodes.
The Duchess Assignment - S1-E21
Trivia: Wilbur Dandridge III was previously Warren Grafton in the episode "Brink of Disaster".
Attack of the Alligators - S1-E23
Trivia: The stock footage of the thunderstorm was later used for the title sequence of "The Prisoner".
Trivia: There is the use of a hand in the same frame of a puppet in this episode, as in the castle a human hand (Southern's) can be seen playing with a pen while the puppets of Kenyon and Dempsey can be seen in the background.
Move - And You're Dead - S1-E20
Trivia: When Alan is speaking to Kenny in the bar, Lambert (from the episode "Vault of Death") can be seen reading a newspaper next to the jukebox.
Trivia: In the 1980s, this episode and "Operation Crash-Dive" were edited together to form the compilation film entitled "Thunderbirds to the Rescue".
Trivia: When Parker says "I would agree I have a rare talent" after breaking into the vault, look in the background and you can see Colonel Tim Casey from "Edge of Impact".
Trivia: In Dr. Korda's office, you can see a statue that also appears in the Hood's temple.
Trivia: The farmer from the episode "Operation Crash-Dive" can be seen among the film crew.
Pit of Peril - S1-E2
Trivia: Colonel Sweeney and his subordinate had previously appeared in "Trapped in the Sky" as Captain Hansen and his co-pilot.
