The Soumya Vishwanathan murder case finally found closure on Wednesday. A Delhi court has ordered the conviction of four men for the murder of the journalist who was shot and killed in her car in 2008. The accused were convicted under the provisions of the Maharashtra Control of Organised Crime Act (MCOCA). Why did the case take 15 years to be solved, heard and closed? What were the challenges police and courts faced? Why were there delays in appointing public prosecutor? Why did the pace of hearings slow down? Soumya's mother Madhavi Vishwanathan, Special commissioner, Delhi Police HGS Dhaliwal, lawyers Flavia Agnes and Abha Singh explain.