Audio problem: After Colonel White thanks Captain Scarlet and Captain Blue at the start of the episodes, they reply with each other's voices.
Character mistake: At the start of the episode, the Ground Controller says that the TVR-17 will be landed at 1400 hours, but a few seconds later he says 1900 hours, before they decide to change it to midnight.
Trivia: Captain Scarlet's voice and face were based on the actor Cary Grant.
Question: How does Spectrum recover its wrecked SPVs?