A new neighbour for enterprising siblings Lena and Willi: Tina and Konrad move into the house across the street. And surprise, surprise: the four children are only separated by a single letter – at least as far as their surnames are concerned. That's fate, all right. So the four HeRRmanns just have to do something together!
Such as chasing pickpockets. These are making the neighbourhood unsafe at the moment. At first, the young detectives are only chasing the reward, but then they are drawn deep into the exciting case. And they realize that some things are not as clear and simple as they seem at first glance...
Recommended for readers 8 years and older.