Far Below Our Streets

Ten-year old Johanna has always been told by her parents she was too curious.
As if it was a sin!
Her own parents don't seem to be curious about anything at all! So annoying.
Yet strange things are happening around here.
So when she sees a man with strange clothes using a strange device on her neighbor, Johanna must do something about it.

After all it isn't often a girl who wants to be a policewoman-detective-reporter (or as she calls it a "politecter" ) gets to unveil the mystery around her whole neighborhood.