In this paper, I argue that the traditional narrative of Iphigenia’s sacrifice lies allusively behind the opening scenes of the Iliad (1.8–487). Scholars have long suspected that this episode is evoked in Agamemnon’s scathing rebuke of Calchas (1.105–8), but I contend that this is only one moment in a far more sustained allusive dialogue: both the debate over Chryseis and her eventual return to her father replay and rework the sacrifice story. The Iliad begins by recalling the start of the whole Trojan war.