Jai should get his goons to kidnap Pia, Karuna and Jigyasa and lock them up and severely torture them. A great suggestion would be to threaten these three with ferocious and blood thirsty hounds, in order to compel Pia to hand over the DVD, so that it be destroyed.
Bani should somehow be smuggled out of the madhouse, and flown outta the country till her name is cleared. Oh and btw as for these three, they should either be killed or blindfolded and sent to far unknown places seperately where they will never ever find their ways back. Places such as the middle of the Sahara desert, Antarctica or somewhere in the Amazon.They can either burn of freeze to death or get kidnapped by the local jungly tribes :D