I found this article, but there are few mistakes in the article they say Shame tied up Krishna's mom, but it was piyasa, and that KN got SS thumbprints when he was bedridden( those were the eariler thumbprints) so don't know how accurate it is but found so thought i would post it here.
Mann Ki Awaaz Pratigya: How will Pratigya fight for Sajjan Singh?
By Almas Mirza
Shakti and Menaka have decided to shed their false skin and show their true colours. Shakti got Krishna arrested by bribing the waiter at Krishna's restaurant to ladge a complaint against Krishna.
Following Krishna's arrest, Shakti thinks he has nobody to oppose him and it is the right time to kick others out of the house. In the coming eisodes Sajjan Singh will be shocked to know from Shakti that Sajjan Niwas is now Shakti Niwas and that his own elder son has cheated on him. He is now asking his own father to leave the house.
Long back, when Sajjan was bed-ridden and was still fast asleep, Shakti got Sajjan's thumb impression on the legal papers that make him the sole owner of entire Sajjan's property.
On the other hand, Menaka has tied Krishna's mother and locked her up in the washroom. Pratigya was just about to discover the truth when she had to leave as Samar was in urgent need.
When Pratigya knows about the entire truth, as always, she will stand by the truth and support and fight for Sajjan Singh. Will the Sajjan family now accept Pratigya as a responsible and dutiful daughter-in-law?
source: http://video.india.com/tv-gossip/2534/mann-ki-awaaz-pratigya-how-will-pratigya-fight-for-sajjan-singh.html