Trivia: Jeff Tracy's five sons were named after Mercury astronauts - Scott Carpenter, Virgil Grissom, Alan Shephard, Gordon Cooper and John Glenn.
Trivia: Although he is the main villain, the Hood appears in only six episodes throughout the entire series.
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: The shot of Thunderbird 2 flying in the dark is actually reused footage from a previous episode, "The Man from MI5."
Trivia: There were a lot of changes to the show throughout the second season. Not only was Virgil "re-cast" with both a new head and voice actor (Jeremy Wilkin), but smaller, more lifelike puppet hands were crafted on the marionettes, and the inside of Tracy Island and the Thunderbird crafts were completely redone.
Trivia: When Maria is preparing the 'special', look on the table and you can see a live mouse crawling through the raw materials and plates.
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.
Trivia: The Hood's name was never used in the TV series. It was revealed in spin-off media and promotional materials.
Trivia: This is the only episode in which we see anyone other than Scott piloting Thunderbird 1, namely Alan.
Trivia: At the end of this episode, we hear the song 'Flying High', which was one of the songs considered as the show's theme tune before the famous march. The song was performed by Gary Miller, who sang 'Aqua Marina' during the closing credits of 'Stingray'.
Trivia: Fenella Fielding was Gerry Anderson's first choice for the voice of Lady Penelope.
Give or Take a Million - S2-E6
Trivia: The calendar indicates that the show takes place in 2026.
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."
Give or Take a Million - S2-E6
Trivia: This is the only episode in which International Rescue does not save anyone from life-threatening danger, and the only episode where Lady Penelope is featured without her chauffeur Parker.
