Die Drei ???: Rätsel aus der Geisterwelt

Synopsis en anglais

The wealthy Nolan Gallagher has his estate auctioned off at the junkyard: a mysterious helmet. What is behind the strange auction? Does the strange headgear lead its owner to a valuable legacy? Mysterious messages from the deceased put the three detectives on the right track. But other "treasure hunters" also want to solve the millionaire's riddle... Help Justus, Peter and Bob crack the spooky case!