Loan signed under duress.
My father underwent a major surgery about a year ago. Before the surgery, he was convinced to add his parents' names to the deed of his house in case something happened to him in the surgery.
My father came through the surgery fine, and recovered at my grandparent's house. But one day there, my grandfather took him to the bank and had someone come out to the car to have my father sign papers. My father was out of it from the surgery at this point, did not know what he was signing, but signed under my grandfather's pressure. Now, a year later, we learned that my grandfather had my father sign out an almost $200,000 loan against his house, eliminating any equity my father had in it and benefitting my grandfather. (We didn't know this because my grandparents have been paying the mortgage).
My question is, what can we now do to protect the house and my father's rights? My grandpa was very deceiving in this action and still will not confess to what he did, although we've talked to a bank about it. Is there any way we can sue my grandfather? How would we even go about this?