Clytemnestra in Wikipedia

Clytemnestra or Clytaemnestra (Greek: Κλυταιμνήστρα, English pronunciation [klaɪtəm'nɛstɹə]), in ancient Greek legend, was the wife of Agamemnon, king of the Ancient Greek kingdom of Mycenae or Argos. In the Oresteia by Aeschylus, she was a femme fatale who murdered her husband, Agamemnon – said by Euripides to be her second husband – and the Trojan princess Cassandra, whom he had taken as war prize following the sack of Troy. However, in Homer's Odyssey, her role in Agamemnon's death is unclear and her character is significantly more subdued...