Salvete omnes:
Just finished Thyestes for a class, a great read! For those who aren't familiar with it, it's a tragedy attributed to Seneca, probably written late in his life (circa 54 AD) immediately following his tenure as Nero's advisor. Many overtones of the capability of a brutal tyrant are evident in the play.
To make a long story short, this play in a prequel of sorts to the Orestaia. Atreus and his brother Thyestes are reuniting after a long exile from Mycenae. Atreus wants revenge from his brother for sleeping with his wife (Atreus is the father of Menelaus and Agamemnon). And so, Atreus kills Thyestes' sons and serves them to their father at the banquet, unbeknownst to Thyestes until after he has eaten them.
A good bit from the play (this is my own translation mind you):
THYESTES: What is this trouble that stirs my insides? What trembles within me? I sense an impatient burden and my stomach groans not with my own groan. Come, sons, your unfortunate father summons you, come! Will this grief flee at the sight of you? From where do they speak?
ATREUS: Ready your embraces, father. Here they come (servants bring out the leftovers of his children, namely heads and feet)! Surely you recognize your own sons?
(at this point Thyestes soliloquizes in grief for a spell, thinking that his sons have only been killed by Atreus, and not realizing yet that he has eaten their corpses)
ATREUS: (in an enigmatic response to Thyestes' questions) Whatever remains from your sons you have, whatever does not remain you have.
(Meaning that he has what remains on the table, namely the heads, but what doesn't remain otherwise is inside of him, Atreus is deriving great pleasure from mocking Thyestes' grief)
THYESTES: Do they lie as fodder for savage birds, or are they diced up for beasts, or do they feed wild animals?
ATREUS: You yourself have dined upon your sons in an impious feast.
Atreus was a vengeful guy. The meter is tough in this play, mostly iambic trimeter, with a sprinkling of Glyconic and First Asclepeid meters. It's very short, only five acts, and a worthwhile read. I read the version edited by R.J. Tarrant from the American Philological Association