The Nightshade Crown

When Lore was thirteen, she escaped a cult in the catacombs beneath the city of Dellaire. And in the ten years since, she's lived by one rule: don't let them find you. Easier said than done, when her death magic ties her to the city. Mortem, the magic born from death, is a high-priced and illicit commodity in Dellaire, and Lore's job running poisons keeps her in food, shelter, and relative security. But when a run goes wrong and Lore's power is revealed, she's taken by the Presque Mort, a group of warrior-monks sanctioned to use Mortem working for the Sainted King. 

The corrupt king August is dead. Prince Bastian has seized the throne and raised Lore - a necromancer and former smuggler - to his right hand side. Together they plan to cut out the rot from the heart of the sainted court and help the people of Dellaire. But not everyone is happy with the changes. The nobles are sowing dissent, the Kyrithean Empire is beating down their door and Lore's old allies are pulling away. Even Prince Bastian's changed. No longer the hopeful, rakish, charismatic man Lore knows and loves, instead he's reckless, domineering and cold.