Der Schattendiamant [The Shadow Diamond]

You are a group of young detectives who have already solved a few notable cases in the neighborhood. But now comes the first big case for your team. Anni Blum, the well-known reporter, needs your help because she is not in the country herself. For you we go to the estate of the old Count of Westfalia. This is where the legendary Shadow Diamond was last seen. But this diamond is no ordinary one. Wherever he appears, he brings only misfortune and resentment. Is this the reason why both the Count and the Diamond disappeared without a trace?