He's Not Your Son (1984)

Donna Mills and Ken Howard play Kathy and Michael Saunders, who are forced to face the possibility that their new baby may not be their new baby. It's a possibility that the hospital made a mistake, and that the Saunders infant was switched with the newborn son of Holly and Ted Barnes (Ann Dusenberry, John James). This error result in emotional disaster for both couples. Twin babies Drew and Preston James play the child in question.