Some of the most successful children's books in Germany have been on twins, just think of DAS DOPPELTE LOTTCHEN by Erich Kaestner or the popular series Hanni und Nanni by Enid Blyton. And it is easy to see why, the topic offers lots of opportunity for slapstick on mistaking identities, Twins obviously also work great to explore more serious topics like identity or the complicated mix of feelings among siblings. There are many popular and great series with twin protagonist