This time, Kloos is in the countryside. He goes on vacation, but he doesn't have time to relax! Because on the very first day he arrives, a mysterious plastic cow flies right up to him. And later, he finds a tail and two cow bones on his bed.
Who wants to scare him? Who is trying to frighten him? Fortunately, Jule helps him – and she is a really cool girl. A detective series for young readers, starring a nine-year-old boy who has nothing to envy from the heroes of classic detective novels.
The series was awarded the Hansjorg-Martin-Preis in 2006, the most important German prize for authors of children's and youth detective books.
Book series number: 5
