Black Familia: Shindoke no Fukushu

Why did the girl have to die? The mother becomes the tycoon's father's lover. The father becomes the tycoon's wife's hairstylist. The uncle becomes the tycoon's daughter's Korean tutor. And the sister becomes a journalist investigating the tycoon's son.
The family of the high school girl disguise themselves to infiltrate the tycoon's life in order to uncover the truth behind their beloved daughter's death. Revealing shocking truths on the way, this is a story about an imposter family tackling mysteries and seeking revenge!
(Source: YTV)