"My, this is a deserted area. One just wouldn't know where one was, would one?"
— "Gayle Williams"

"The Man From MI.5" is the seventeenth episode of Thunderbirds season 1, and the twentieth to be produced. It was first broadcast on the 20th of January 1966.


The British government asks for International Rescue's help in locating the missing blueprints for an atomic weapon. Whilst tracking the culprits, Lady Penelope is kidnapped and held aboard a bomb-rigged boat. Scott and Gordon have very little time to rescue Penelope and steal back the plans before the bomb explodes and the villains escape.


Main article: The Man From MI.5/Storyline


Main article: The Man From MI.5/Transcript


Regular CharactersEdit


Lady Penelope and Carl

Guest CharactersEdit


The third man

Cameo RolesEdit

International Rescue Equipment UsedEdit



Non-International Rescue Equipment UsedEdit



The French Riviera


  • First Appearance: FAB 2.
  • The model submarine Brains used for his experiment in the Tracy villa pool was also used as The Hood's 3E Submarine in Desperate Intruder. It even still has 3E written on the sides.

Brains' model submarine

  • When broadcast in the half-hour 'cliffhanger' format, part one concluded with Carl taking off in his boat from FAB 2 with Lady Penelope as prisoner.
  • The backdrop used for the harbour scenes also appears in the opening scene of The Duchess Assignment, in the Captain Scarlet and the Mysterons episode Model Spy, and in the Joe 90 episode The Race.

Monte Carlo harbour in "Captain Scarlet"

  • This episode features the first full Thunderbird 4 launch sequence shown from inside Pod 4 ­ prior to this, Thunderbird 4 had only been seen emerging down the ramp outside the pod door. This is also the only occasion in which Thunderbird 2 gently rests the pod on the surface of the water and then rises clear of the pod with lifting jets (normally, the pod is simply dropped onto the water).


Main article: The Man From MI.5/Goofs

Foreign TitlesEdit

  • French: L'homme du M I5
  • German: Der Mann vom M.I.5
  • Spanish: El Hombre del MI.5; El agente MI5 (DVD)
  • Italian: S.O.S. Servizi Segreti Britannici
  • Dutch: De geheime agent (TV); De man van MI. 5 (VHS, DVD)
  • Japanese: 情報員MI. 5

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