Keleana, tome 0.4
Sarah J. Maas2012

When the King of the Assassins gives Celaena Sardothien a special assignment that will help fight slavery in the kingdom, she jumps at the chance to strike a blow against an evil practice. The misson is a dark and deadly affair which takes Celaena from the rooftops of the city to the bottom of the sewer—and she doesn’t like what she finds there.

Titre original : Throne of Glass, book 0.4: The Assassin and the Underworld (2012)