Dionysius II rules Syracuse as king during these events, governing with deep distrust toward his subjects. This suspicion fuels violent suppression of perceived threats, extending to the execution of family members and political enemies alike, forging his reputation for brutality. When the shepherd Melos attempts assassination, Dionysius II orders his arrest and condemns him to death. He initially dismisses Melos's plea to delay execution for his sister's wedding, interpreting it as a ploy to escape justice.

He consents to the three-day reprieve only after the sculptor Selinuntius volunteers as a hostage, staking his own life on Melos's punctual return. The king imposes a strict condition: Selinuntius dies if Melos fails to appear by the appointed hour. Throughout the waiting period, Dionysius II remains convinced of Melos's dishonesty, viewing any delay as proof of human untrustworthiness. He allows Selinuntius to sculpt within the prison but emphasizes this privilege will not halt the execution.

His wife, Queen Phryne, intervenes by sending agents to obstruct Melos's journey back to Syracuse, seeking to confirm the king's cynical worldview. As execution preparations commence, Dionysius II observes Selinuntius's completed statue depicting "Trust," yet remains unmoved. When Melos arrives exhausted but triumphant in the final moments, the king witnesses the crowd's reaction to the friends' reunion. This overwhelming display of unwavering loyalty compels him to release both prisoners. The narrative notes his eventual overthrow due to persistent tyrannical practices unrelated to this specific event.