Pure routine, thinks Klooz when he takes on his new case with the newspapers that disappear every day from Olga's kiosk. For a super sleuth like him, the mystery he is called to solve is certainly no great challenge. And yet, what initially seems like a boring job turns into the most incredible case of his career. Wet footprints and a terrible smell lead the private detective to a clue. And very quickly Klooz is sure: This case stinks!

A detective series for young readers, featuring 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 award for authors of children's and young adult detective books. It has been translated into 14 languages and has sold over 850,000 copies.