CITV Thunderbirds Are Go Catch up on the ITV Hub When disaster strikes... International Rescue answers the call! 4 episodes available to watch Share this programme: Copied to clipboard Share on Facebook Share on Twitter Copy link to share Series 3 Latest 15. Signals (Part 2) Sat Saturday 22 Jun 8am The chase is on, and Kayo and Alan must work quickly to re-capture Thunderbird 3. 14. Signals (Part 1) Sat Saturday 15 Jun 8am Through the use of archive footage, Brains informs the team of his discovery. 13. SOS (Part 2) Sat Saturday 8 Jun 8am Gordon travels in Thunderbird 4 to recover Braman. 12. SOS: Part 1 Sat Saturday 1 Jun 8am IR receives a distress call from the Calypso.