Atreus and Thyestes
When they grew up, Atreus married the daughter of the King of Mycenae, and so he soon became the King of Mycenae himself. But Thyestes was jealous.

Atreus went to Zeus (his great-grandfather through Tantalos) and complained. Zeus told Atreus to make a bet with Thyestes that if the sun ran backward, Atreus could be king again. Thyestes thought, "Nobody can make the sun run backward!" so he agreed. But the gods can do anything, so Zeus did make the sun run backwards. Atreus got to be King of Mycenae again, and he banished Thyestes from the kingdom.
But Atreus couldn't let it go at that. He was still very angry at his
wife and Thyestes. So he pretended to be friendly and invited Thyestes
to come over for dinner, with
his two little boys. Thyestes was happy that he was going to be reunited
with his brother! When Thyestes arrived, Atreus sent the boys
out to play and sat down for a good
talk with Thyestes. Soon the slaves
brought dinner in, and they ate course after course of delicious food.
Then another slave brought in the dessert in a big covered dish.
But when the slave took the cover off the dish, Thyestes was horrified
to see his two sons’ bloody heads and hands and feet! Atreus had
murdered them and cooked them and served them to him for dinner. Thyestes
just ran out of the palace and never came back again. He did, however,
have one more son, Aegisthus,
who eventually avenged him.
To find out more about Atreus and Thyestes, check out these books from Amazon.com or from your library:
The Pride of Lions: The Story of the House of Atreus, by Norma Johnston (2002, unfortunately out of print right now, but maybe your library can find it). For middle schoolers.
The Oresteia, by Aeschylus, translated by Robert Fagles (Penguin Classics). The story of Atreus' son Agamemnon and grandson Orestes. Fagles is a great translator! Includes a version for performance.
Aeschylus, by John Herington (1986). A discussion by a specialist about the life of Aeschylus and why his plays are written the way they are.



