The mystery of the mountain hotel

Justus, Peter and Bob have to look in a remote mountain hotel resort due to darkness and fog. But here much good stuff is not true because the boys are the only guests, the Hotel host is a very strange fellow and strange things happen at night. And what is it about the exaggerated interest of the host for many years past plane crash in the region to be? The boys go to the mountains to the plane wreck and there wait all sorts of surprises on it.
The detective story is all in all so-so and can convince only moderately in their entirety. It works in phases rather confused and confusing and also the eventual case clarification sounds badly constructed and the listener thus only partially credible. Perhaps the literary work (Die drei ??? and the missing pilot) is better and easier to understand, but the present here radio version has quite a few shortcomings.
The fact that the absolute majority of the action as a whole by only four speaking roles (the ??? already included) is disputed, not just raises the entertainment value of this radio play.
Conclusion: Mild series result from the ??? - series.