ДНК S04E140 - Выпуск 544. Сестра из соседнего двора?

A mother with many children handed over three children to an orphanage. The older brother and sister were taken from the orphanage by their stepfather, and the younger girl was adopted. Before her death, her mother repented and bequeathed her son to find out the secret of her sister's adoption. Will the son be able to fulfill his mother's last wish?