Calchas persuades Agamemnon to sue for his daughter’s return. At this time (in Shakespeare’s version at least) the Greeks hold captive the senior Trojan lord Antenor, savior of Menelaus and the earlier Greek deputation, and so an exchange is negotiated: Cressida for Antenor. But Diomedes falls for Cressida and she, in turn, falls for him. Troilus hears of this betrayal and vows revenge on Diomedes. Strangely, in Shakespeare’s play—which is considered one of the most problematic and beguilingly odd of his entire canon—neither Troilus nor Cressida suffer the usual fate of star-crossed lovers.
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