Bond to transfer land by agent to a investor.

One of my acquaintance somehow managed to make me agree to deposit a handsome amount of money in a company (and gave me the papers/receipts of the amount deposited). Now when I ask my money back, he says that the company is closed and is undergoing a trial in court. 1. Should I file an FIR or attach my name as a victim to the case undergoing the trial. If FIR has to be done, where should I file the FIR .....in the Police Station under whose jurisdiction he took money from me (i.e. in my hometown) or under the jurisdiction of PS where the head office of the company is situated? 2. I gave money because he explicitly said to me that "if the company will not return the money, I will". Now, he knew that I am going to file a criminal case against him and he is ready to transfer his land (worth the amount I deposited) to me if refrain from filing the case. The question is under whose name should the stamp paper be purchased and who is liable to pay stamp duty, the agent or myself?