Hercules in the Underworld
The scene where Deianara was abducted by the Centaur and where Hercules shot him with an arrow was supposedly the last days of Hercules as a mortal.  When he was caught by the fire, Hercules chose to be cremated alive to hasten his death but was transformed by Zeus into a full god.  Also Deianara is the second wife and her death was by suicide, Megara is the first wife.