Shounen Tanteidan Mahou Ningyou Edogawa Ranpo

A girl gidnapped by a strange puppeteer.
A magical doll that moves at night.
A boy named Kobayashi of the Akechi Detective Agency embarks on a one-man investigation, but is unable to get close to the truth.
However, working together with the girls involved in the case, he gradually tracks down the culprits.
When the trick behind the two incidents is revealed, the case comes to a turbulent end.
Original story by Edogawa Ranpo. (Studio ROUGHsketch)