Warned by heaven itself, does it anyway; the poem's standing bad example.
Clytemnestra's lover, who murdered Agamemnon at the homecoming feast although the gods had sent Hermes himself to warn him off, and died in turn under Orestes' hand. Zeus opens the poem with his case — proof, he says, that mortals blame heaven for what their own crimes earn — and the whole Ithaca story is measured against it.
Bonds
AegisthuslovesClytemnestra — won her while the king fought