 is the 24th episode of "Thunderbirds", a British Supermarionation television series created by Gerry and Sylvia Anderson and produced by their company AP Films (APF).Written by Alan Pattillo and directed by David Lane, it was first broadcast on 10 March 1966 on ATV Midlands .Set in the 2060s, the series follows the exploits of International Rescue, an organisation that uses technologically-advanced rescue vehicles to save human life.