Got cheated in the name of abroad job assurance

Kindly provide suggestion to retrieve our money. 10 years back was in an urge for abroad job and was suggested by one of his relatives to meet their friend who is involved in sending people to abroad jobs. Apparently trusting the family members, my husband gave 4 lakhs to the person. He was very clever and planned to cheat so, he took 350000 in hand. And remaining he asked us to deposit in his account. As it was well planned, he did not take the money in one shot instead he took little by little with whole lot of drama. The time when we came to an understanding that we were been cheated. We formerly spoke to him and he provided some blank cheque�s. Of several follow ups we could not get our money which was my father-in-law�s hard earnings. We placed a formal complaint against him in police station but we could not get any solution. Now we have few evidences and the formal complaint copy. We are in need of guidance to get our money back. Please advice us, how to move further on this. Do we have a chance to get our money back. Our relative is now withdrawn his words and we suspect our relative in this whole scene. Looking for support