Lady Penelope Summer Extra

Published by City Magazines in 1966, Lady Penelope Summer Extra is a single-issue spin-off from the Lady Penelope comic, capitalizing on the popularity of the Thunderbirds universe. This one-shot special features the glamorous secret agent and her chauffeur, Parker, in a self-contained adventure, offering fans a summertime dose of International Rescue's stylish ally. Though brief, it stands as a curious artifact of 1960s British comics, expanding the world of Gerry Anderson's Supermarionation franchise into a seasonal, standalone story.