ДНК S04E07 - Выпуск 411. Родная или нагулянная внучка?

Grandmother and granddaughter, at first glance, dote on each other… In fact, the pensioner is convinced: her granddaughter is not her own — 20 years ago, her son could not go on love dates in any way, because he was lying in a closed clinic. But the granddaughter herself has no doubt about her relationship with her grandmother, because her mother told her that dad was not in the hospital, but at her house. When the daughter wanted to do a DNA test with her father, the mother was seriously scared. So who is the father of the girl who may get a considerable inheritance of a pensioner whose son is seriously ill?