Terry Deary is the author of over 200 fiction and non-fiction books, which have been published in 32 languages. His historical fiction for older children Tudor Terror has been praised as "a marvellous blend of fact and fiction" (School Librarian). His non-fiction has been consistently in the best-seller lists since 1994. His Horrible Histories celebrated their 15th anniversary in 2008, having sold over 10 million copies worldwide and been adapted as television series, theatre tours and museum exhibitions. Terry Deary was voted "Outstanding children's non-fiction author of the 20th Century" by Books for Keeps magazine.