Published in 1942, The Famous Five series by Enid Blyton is about a group of four teenage mystery solvers and their dog Timmy. There were 24 books in the series, but due to the critical acclaim, there have been several other short stories and spin-offs published, including three TV series, an audio drama set on CD, two musicals, 14 choose-your-own adventure books, six video games, many comics, and several parody books and films. This series bears a striking resemblance to Scooby-Doo in genre, despite being released almost 30 years before it.
Thanks so much to Greybishop for sharing this fun fact idea!
~ WildwindVampire ~