Emil and the Detectives is a 1929 novel set mainly in Berlin, by the German writer Erich Kästner and illustrated by Walter Trier. It was Kästner's first major success and the only one of his pre-1945 works to escape Nazi censorship. The book was immediately popular and the original version sold an initial two million copies. First published in English in 1931, it has never been out of print and has been translated into at least 59 languages.
It is Kästner's best-known work.