Facts :- Finding by local authorities. Initial arrests and reports.
Fiction :- Pin pointing such people who have less financial assets, least contacts with upper ranks. People will even forget such people's fate more earlier than that of Arushi's murder.
Method :- Involving higher investigating agencies like CBI, where expenses are obviously more but results are assured.
Conclusion :- Recomendably good work done by Talwar, Talwar's and "associates". Utilizing money @ the right time and to right people speaks the success story.