Die Drei ???

Die Drei ??? (pronounced "Die Drei Fragezeichen," meaning "The Three Question Marks" in English) are a trio of young detective characters First introduced in 1964, the books follow the adventures of Justus, Peter, and Bob as they solve mysteries in the fictional town of Rocky Beach, California. The series has been extremely popular in Germany and other European countries, with over 500 million copies of the books sold worldwide. In addition to the novels, Die Drei ??? have also been adapted into radio dramas, television shows, and movies. Despite being primarily aimed at young audiences, the series has a dedicated following of all ages and has been praised for its engaging storylines and well-developed characters.