Complex sentence: After her death, it is revealed that Chase was upset during her follow up due to the death of his father, who died of lung cancer-a condition he was revealed to have in the season one episode, Cursed.
Split into simpler sentences: After her death, it is revealed that Chase was upset during her follow up due to the death of his father, who died of lung cancer. Chase's father was revealed to have this condition in the season one episode, Cursed.