Twins' Revenge, Love Twist(Eng Dub)

The heroine seeks revenge for her sister by impersonating her and marrying into the Qin family to find the murderer. Throughout the story, she methodically investigates and identifies suspects one by one. As she delves deeper into the truth, she gradually develops feelings for the hero. In the course of her search, she makes a shocking discovery: the child her sister was carrying was not fathered by her brother-in-law!