名無しの権兵衛 - Anonymous

I just finished watching Japanese drama "Untouchable"
- アンタッチャブル.

The story is about a first rate reporter Narumi Ryoko who works for a third rate magazine. She writes stories about important events and untouchable people.
She lives with her brother who is a police officer.
She carries around a little black book with the names of the people she holds a grudge against. It is a serious drama with a comic element.
And the word that is very important throughout the story is:

名無しの権兵衛

ななしのごんべえ (nanashinogonbee) - Anonymous
The magazine is receiving tips from 名無しの権兵衛 on crimes that are committed. To find out more you'll have to watch it.
You can watch アンタッチャブル on Dramacrazy.net or a similar streaming site.