Trojan War was reunited with Menelaus. Proteus also told Menelaus that he was destined for Elysium (Heaven) after his death. Menelaus returned to Sparta with Helen eight years after he had left Troy. Agamemnon returned home with Cassandra to Argos. His wife Clytemnestra (Helen's sister) was having an affair with Aegisthus, son of Thyestes, Agamemnon's cousin who had conquered Argos before Agamemnon himself retook it. Possibly out of vengeance for the death of Iphigenia, Clytemnestra plotted with her lover to kill Agamemnon. Cassandra foresaw this murder, and warned Agamemnon, but he disregarded her. He was killed, either at a feast or in
Mentes (King of the Taphians) at Pylos and King Menelaus of Sparta, to make inquiries as to the whereabouts of his father. Upon his return, but he should kill the suitors, either by stealth or publicly. Although Mentes had hardly any appearances in Greek myths of earlier antiquity, he became a symbol of a guardian and a mentor. Later, his name got a derogatory flavor and became a symbol of a sinister messenger. He is not to be confused with Mentor, the elderly friend of Odysseus in whose care Telemachus was placed during the Trojan War. To add to the possible confusion, Athena also takes