Brother fraudulently transferred property from other brother

Greetings, it was about a case which is still in place since 2006, two brothers out of one is unmarried (also littlie unstable and not having full sense-unmarried one), there is a piece of land yet not divided between two and both are joint holder of the land. Some goons got signature and thumb impression from the unmarried brother forcefully, by fake promises of marriage and other stuffs and now the scenario is that a case is pending in civil court which was filed by the same person (Unmarried brother-wherein others are supporting him financially) on the a/c of unmarried brother that a fraud was done with him as that was the only portion of land he has for his livelihood and the truth is that without even paying a single rupee other party has got that land registered on their name. Considering that I am writing you on behalf of Unmarried brother and his family, can you please help me understand that what are the chances and scope in this case. thanks!