Horrible Histories is a British children's live-action historical and musical sketch comedy television series, based on the bestselling book series of the same name by Terry Deary. The show was produced for CBBC by Lion Television with Citrus Television and ran from 2009 to 2014 for five series of thirteen half-hour episodes, with additional one-off seasonal and Olympic specials.
The TV show carries over the graphic style and much of the content of the Horrible Histories book series. It maintains the franchise's overall irreverent but accurate focus on the dark, gruesome or scatological aspects of British and other Western world history, spanning predominantly from the Stone Age to the post-World War II era. Individual historical eras or civilisations are defined and named as in the books, with sketches from several different time periods combined within a single episode. Live-action sketches—which often parody other UK media or celebrities—and music videos are intercut with animations and quizzes. The starring troupe are Mathew Baynton, Simon Farnaby, Martha Howe-Douglas, Jim Howick, Laurence Rickard, Ben Willbond and Sarah Hadland, alongside a large supporting cast headed by Katy Wix, Lawry Lewin, Alice Lowe and Dominique Moore. The black rat puppet "host", Rattus Rattus, appears in short bridging segments, explaining the factual basis for each sketch and helping children understand the facts.