"No man can stay in the burning sun for long without having his tongue loosened."
— The Hood

"Desperate Intruder" is the eighth episode of Thunderbirds season 1, first broadcast on 18th November 1965.


Brains and Tin-Tin go on an expedition to find the lost sunken temple below the surface of Lake Anasta, in hopes of finding hidden treasure. However, their quiet vacation is cut short when the Hood goes to dangerous lengths to stop them - and to claim the treasure for himself...


Main article: Desperate Intruder/Storyline


Main article: Desperate Intruder/Transcript


Regular CharactersEdit

Guest CharactersEdit

International Rescue Equipment UsedEdit

Non-International Rescue Equipment UsedEdit




  • When Brains is hypnotized by The Hood for the first time and collapses, between shots his glasses simply disappear. They are subsequently shown to have fallen off, but the action is not seen on-screen; one moment the glasses are on his face, and the next they have vanished.

Foreign TitlesEdit

  • French: Le trésor du lac
  • German: Der versunkene Schatz
  • Spanish: Un Intruso Siniestro; Intruso desesperado (DVD)
  • Italian: Il tesoro perduto
  • Dutch: Verdronken schat (VHS); De wanhopige indringer (VHS, DVD, TV 1966); De gevaarlijke indringer (TV 1992)
  • Japanese: 湖底の秘宝