My Killer Daughter-in-Law

Melissa lost her sight in an accident six months ago. On the day she finally regains her vision, she witnesses her daughter-in-law Laura being murdered by her twin sister, who then assumes Laura's identity. To survive and avenge her daughter-in-law, Melissa is forced to feign compliance with the killer while secretly gathering evidence. In the end, she strikes with decisive force and brings the murderer to justice.