He would have planned a revenge on the village & Dada Thakur after that. And being related to the village, he would be knowing about the Kaal Bhairav temple & the shivlings and would have wanted the shivlings for their power and would have hired Namrata for that. Shakti Thakur's husband would have presented himself as Sethji for the deal which Namrata would have agreed as she herself wanted to take revenge on Dada Thakur