Thunderbirds Are Go S01 Ep21 Comet Chasers

Written by Randolph Heard Directed by David Scott Comet Chasers Francois Lemaire and his wife Madeline embark on a journey to see Halley's comet up close, but end up in a situation when Francois decides to enters the comet's tail. Their ship suffers damage and International Rescue are dispatched, much to the delight of Alan who has always wanted to see the rare comet up close. Cast Scott Tracy, Alan Tracy: Rasmus Hardiker John Tracy: Thomas Brodie-Sangster Grandma Tracy: Sandra Dickinson Guest Cast François Lemaire: Jack Whitehall Madeline Lemaire: Taj Atwal