The Assassin and the Underworld

Before the events of Throne of Glass, sixteen-year-old Celaena Sardothien is back in Rifthold, working as the star assassin of Arobynn Hamel, the King of the Assassins. Arobynn hands her a mission that promises to strike a blow against slavery in Adarlan, and it sends her from the city's rooftops down into its hidden underworld.

The job is not what it seems, and as Celaena learns the truth behind it, she has to reckon with her guardian's motives, her rivalry-turned-partnership with fellow assassin Sam Cortland, and what she is willing to accept simply because a powerful man ordered it.

The fourth of the Throne of Glass novellas, later collected in The Assassin's Blade, it is a darker, more claustrophobic story than its predecessors.