This episode... I do not know. It was not only the Mark's father and his last hours. The way he said that it was his best day when he became a doctor and he seems finally accepts his son decision. And the way he gives Elizabeth the pearls he gave to Mark's mother. It was so beautiful.
But on the other storylines - Elizabeth trying to treat that young woman, who was so against every help and just wants to blow her life.
And Carter. It seems that talking in the last episode help as he is sleeping and has his appetite back.