The Glory

Both have very smart female leads.

In The Glory, FL returns from her adoptive family to her own house to seek the truth.
In Coroner's Diary, FL disguises herself as another person and enters their family to seek the truth.

In both dramas, the ML is influential and is helping the FL with her plans and revenge.

Both dramas are of dark themes

If you watched The Glory and liked the social commentary, the questioning of social rules and the place of women in society, women helping each other and, above all, strong female characters in a more serious tone, I strongly recommend you watch Marvelous Women.