Mnemosyne — Classical Greek Myth Library

Cassandra (Alexandra), daughter of Priam and Hecuba, received from Apollo the gift of true prophecy. In the fullest classical explanation—spoken by Cassandra herself in Aeschylus—she consented to the god’s love (or seemed to), received the power, then broke her promise and refused him. Apollo could not revoke a divine gift once given; instead he added the curse that her true foretellings would never be believed. Thereafter she foresaw Troy’s doom, the Wooden Horse, her own enslavement, and Agamemnon’s murder—always in vain. Apollodorus records that Apollo sought her and, cheated of the union, made her prophecies distrusted. Variant childhood strands (not primary here) have the children Cassandra and Helenus licked by serpents in a temple of Apollo and so endowed with second sight; the sexual bargain-and-betrayal version remains the tragic standard for the curse of disbelief. The gift-curse binds her role through the war and the nostoi: accurate and helpless, sacred to Apollo yet punished by him, she enters Mycenae as Agamemnon’s spear-prize and dies with him, her last visions fulfilled and still unheeded until too late.