In which layer of the eighth circle of hell is Sinon punished?

Sinon is punished in the tenth layer of the eighth circle of hell, which is reserved for those who have committed fraud. This level is particularly significant as it exemplifies one of the more egregious forms of betrayal and deceit, aligning with Sinon’s role in the Trojan War as a deceiver who contributed to the downfall of Troy through his lies regarding the Trojan Horse.

Within this layer, the situation reflects the gravity of his actions, as the damned are subjected to the consequences of their betrayal in life. This circle highlights Dante's exploration of fraud and its impact on society, marking a clear distinction from other sins represented in different layers. Each part of Dante's structure serves a broader narrative purpose, linking the punishment to the sin, causing Sinon’s eternal punishment to mirror the deception he practiced in life.