seduced Agamemnon's wife, Clytemnestra, and the couple plotted to kill her husband upon his return. They succeeded, killing Agamemnon and his new concubine, Cassandra. Clytemnestra and Aegisthus had three children: Aletes, Erigone, and Helen who died as an infant.

Seven or eight years after the death of Agamemnon, Agamemnon's son Orestes returned to Mycenae