Oops! You need to enable JavaScript in your browser to start watching. CITV Thunderbirds Are Go Up From the Depths (Part 2) Series 2 - Episode 7 - Animated adventure series. When the Mechanic steals some volatile iridium, Brains must make drastic alterations to Thunderbird 3 to save the day. Tue Tuesday 8 Dec 6pm 30 mins Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share