It was a mistery drama. I think every episode was a different story and there was a narrator introducing each story and he also had an interesting story to tell because he said he was killed. 

Can you tell more about the drama ?  Like main characters, or some stories told. 

From what you said, it's hard to tell. Maybe Soumatou Kabushikigaisha.


Was it Higashino Keigo Mysteries?

Yes! Thx so much!