"Cry Wolf" is the eigteenth episode of Season 1, first broadcast on 27th January 1966. It was the 21st episode produced.
When a pair of young boys call out International Rescue for no reason, Jeff decides to bring them back to Tracy Island so they can see the consequences of their actions. Although they later get into real danger from the evil actions of the Hood, nobody at International Rescue believes their call for help due to their past actions. Will they eventually realise how serious the situation really is?
- Main article: Cry Wolf/Storyline
- Main article: Cry Wolf/Transcript
- Jeff Tracy - Peter Dyneley
- Scott Tracy - Shane Rimmer
- Virgil Tracy - David Holliday
- Alan Tracy - Matt Zimmerman
- Brains - David Graham
- Tin-Tin Kyrano - Christine Finn
- Gordon Tracy - David Graham
- John Tracy - Ray Barrett
- Grandma Tracy - Christine Finn
- The Hood - Ray Barrett
- Mr. Williams - Ray Barrett
- Bob Williams - Sylvia Anderson
- Tony Williams - Christine Finn
- Colonel Jameson - David Graham
- Lieutenant Lansfield - Matt Zimmerman
- Satellite HQ Sergeant - David Graham
International Rescue Equipment UsedEdit
- Thunderbird 1
- Thunderbird 2
- Thunderbird 3
- Thunderbird 5
- Manual Descending Equipment
- Radio Direction Finder
- Transmitter Truck
- Fire Tender
Non-International Rescue Equipment UsedEdit
- Thunderbird 2 go kart
- Desert Jeep Spider
- Spy Satellite Alpha Two-Zero
- The interior and exterior sets of the Monitoring Station were last used as the Satellite HQ in The Impostors, and would be reused again as another different building in Ricochet.
- Mr. Williams' house is a remodeled version of Grandma Tracy's House.
- Other Tracking Stations marked on Lansfield's console are located at Cranston, Kangaroo (East), and Spring Hill.
- Geoff Meldrum or Noel Rowland is known to have been a camera operator on this episode, albeit uncredited.
- Plot elements and names from this episode were borrowed and used in the Thunderbirds Are Go! episode Extraction.
- Bob and Tony were named after art director Bob Bell and his son Tony respectively.
- Main article: Cry Wolf/Goofs
- French: Les amateurs
- German: Blinder Alarm
- Spanish: El Lamento del Lobo; El Espectro ataca (DVD)
- Italian: Gioco pericoloso
- Dutch: Een gevaarlijk spel (TV 1966); S.O.S. (TV 1992); Vals alarm (VHS); Loos alarm (VHS, DVD)
- Japanese: 危険な遊び