I want to file fraud case against my in-laws.

I want to file fraud case against my in-laws as they told me at the time of marriage that the girl with whom i am marrying is their daughter and didn't told anything, later come to know that the girl is adopted one and the daughter of a man who was a drunker and didn't do anything, the whole family is involve in this conspiracy and doing mental torchure to me as i marry this girl because of her qualifications but she looks completely illiterate and even don't know the basic pronunciations. By thinking all of theses i m under depression and want to get rid of this family as they did married after providing false information about the girl. Please suggest me over my email "[email protected]"