Thunderbirds Are Go Season 3 Episode 23 - Venom Episode Title:Venom.Episode Description:An arachnologist is bitten by a rare spider in a dense rainforest, and a carrier drone containing anti-venom goes off course. Scott, Virgil and Kayo fly to the scene in Thunderbird 2 to find the drone before it's too late. Meanwhile, Lady Penelope and Parker visit Professor Moffat to collect some Centurium 21, which is needed as fuel for the T-Drive engine. But someone has stolen the entire supply.