Sinon and Laocoön: Persuasion and Omen before the Sack

Catalogue ID: 04-trojan-cycle/036-sinon-laocoon-horse-debate

Cycle: Trojan

Version line: Epic Cycle — *Iliou Persis* (Proclus) / Apollodorean (+ Roman Vergilian transmission labeled for Laocoön)

Sources: Proclus, summary of the *Iliou Persis*; Apollodorus, *Epitome* 5.15–19; Vergil, *Aeneid* 2.40–249 (**Roman transmission** of Greek sack traditions—Laocoön’s snakes elaborated)

Source file: /workspace/greek-myth-catalogue/04-trojan-cycle/036-sinon-laocoon-horse-debate.md

Characters

Aeneas — Vergilian narrator-witness (**Roman frame**)
Cassandra — prophesies doom; ignored
Laocoön — Trojan priest; opposes the horse; sons (and he, in Vergil) killed by sea-serpents
Odysseus — named in Sinon’s false story as persecutor
People of Crisa — supposed recipient of the horse; true patron of the ruse
Sinon — Greek left behind; false deserter whose speech persuades Troy (developed tradition)
Sons of Laocoön — slain by the serpents (Proclus; Vergil)
Trojan assembly — accepts Sinon’s tale; orders the horse received

Places

Interior of Troy — horse hauled to Athena’s precinct
Sea off Troy — source of the twin snakes
Trojan shore — Sinon’s capture; Laocoön’s sacrifice; arrival of the serpents

Themes

Narrative

Left behind as part of the ruse, Sinon (in the developed tradition) let himself be captured and spun a tale: Odysseus had marked him for sacrifice to ensure the army’s safe departure; he had escaped; the horse was an offering to Athena in recompense for the stolen Palladium—and if the Trojans harmed it, ruin would follow, but if they housed it, they might turn Athena’s favor and even invade Greece. Priam and the people believed him. Laocoön, priest of Apollo (or Poseidon in some notices), opposed receiving the horse and struck it with a spear. While he sacrificed, two serpents came from the sea and killed his sons—and, in Vergil’s Roman epic telling, Laocoön himself as he tried to save them. The Trojans read the omen as punishment for impiety against the offering and dragged the horse in with festival joy. Cassandra’s clearer warnings still went unbelieved. Proclus’s *Iliou Persis* already knows the snake portent against Laocoön’s family as the hinge that seals Troy’s choice; Vergil stages Sinon’s rhetoric and the serpents as the emotional center of *Aeneid* 2’s Greek-derived sack prelude. Night and the open belly of the horse followed.