Hushiar bangla - S01E40 - A sister's agony

Watch Hushiar bangla Season 1 Episode 40. It was telecast on the 26th of September, 2017 on the Colors Bangla channel. An agony for a brother dies in the process of protecting his sister . Police are searching for the perpetrator. The bracelet found at the scene of the murder is all that remains. Police believe that it was the group of local MLAs along with relatives that of the victims. What is the motive behind this heinous crime?