Right at the beginning when the council of the gods is happening. Different because in odyssey he gets killed in another house (bad host) , in this he gets killed in his own home. Agamemnon (artemis orders it so he does it,) , iphigenia, artemis, Calchus (prophet at beginning of iliad, told to give up concubine) Why else did she kill him: clytemnestra is also sleeping with his cousin aegisthus, she"s power hungry, wants to remain as a ruler (seen throughout the play, not directly spoken by her however) Thyestes leaves in exile that he"s eaten children like ew: thyestes then curses atreus and his house, clymnestra and cassandra both refer to this, cassandra won"t speak when she gets there, but starts speaking in prophecy. Shes like oh shit this house drips of childrens blood i. History of the house represented in cassandra. Tantalus chopped up pelops and fed him to the gods.