Here is example of using complaint to vigilance department for lack of proper process during police investigation:

http://groups.yahoo.com/group/saveindianfamily/message/137577

Here is another thread on SIF giving various people's success / result of complaining against police vigilance department:

http://groups.yahoo.com/group/saveindianfamily/message/138866

Template for getting RTI info from police about a particular crime. You can modify the below RTI to change it to crime reports on e.g.: Dowry complaints, 498A complaints, Chain snatching incidents etc.

RTI Template to get information on missing children complaints

Information on RTI for Hyderabad police:
http://www.hyderabadpolice.gov.in/Main/RTI.htm