Hirai Tarō (平井 太郎), better known by the pseudonym Rampo Edogawa ( 江戸川 乱歩), sometimes romanized as "Ranpo Edogawa", was a Japanese author and critic who played a major role in the development of Japanese mystery fiction.
If this was my first Rampo's book in the "Young detectives" series, it would have been a fun, and in some moments, surprising, story, Rampo's imagination showing in all of its pages. Being my seventh it is still a fun, but not very surprising, read, as, if you have read any of the books in the series before, you know almost all that will happen even before opening the book. It is still a charming read, Edogawa a gifted writer, and if you are starting to read in Japanese, a pretty easy one, because the vocabulary is not overly complicated, even if it has some old fashioned expressions. For completists of the series or younger readers.
The best: it's Edogawa Rampo
The worst: not an ounce of originality here
Alternatives: start with the two first in the series; read Rampo's stories for adults, they are superfun