Выпуск 354. Сын мужа и жены или любовницы?

The woman buried her newborn daughter and, in order to recover from grief, adopted the boy Danila. After 15 years, the foster mother found out that her blood eldest daughter was terminally ill. The woman decided to apply for a DNA test to find out where the biological mother and father of her adopted child are. That's just a woman and a man whose data completely coincide with the data in the young man's birth certificate are the happy parents of three children. So who and why left Danil in the hospital?