Fraud of Money

I had given one person money for a period of 6 months who promised me to give interest in return. I asked him to make a Agreement for the same but he refused convincing me that he will return without fail and sent me a receipt via email stating that he has received the money and will give interest as agreed & will repay on due date. After 6 mts I asked him my money but he kept on delaying saying that he has suffered a heavy loss in stock market and will require some more period to return the same and till then he promised to pay me the decided interest. I had to ask him my interest every month and by delaying he used to pay me the same. in this way 15 months passed now he has stopped paying me interest & is also not returning my given money by saying that as soon he receives or arranges the same he will return me. He always promises some date in future but never fulfills his commitment. however i forcefully managed to take blank cheque and a agreement from him saying that he has taken money from me & is returning me the same via that cheque and if he failed with his promise he will be liable to pay all the charges ,interest & damages incurred by me to take legal action against him. I also went to local police station to lodge a complaint but they refused to take saying that it is criminal case. I don't want to go to court as it will keep the case pending for years and further this man is so shrued that he may have transferred the money successfully to his relatives showing him bankrupt. Further now he and his family is also not found in the house where he used to stay whenever I go, but if I called him for a meeting he meets me in the same house where I never find his son & wife now. His son is a CA working in a firm with a nice package but is not available to talk. I have also heard from this person that he has taken money from many other persons also and is under a debt for around 25 crores. I have also heard that many people come to his house of which i have met 2 persons whose tolallying debt is around 1 crores Therefore I request you to guide me as to how can I recover my money from him.