A Grim and Sunken Vow

Arlo and her friends must decide how far they're willing to go to depose a cruel ruler in this third book in the Hollow Star Saga that's The Cruel Prince meets City of Bones and “offers vicious and thrilling intrigue” (Kirkus Reviews).

The die is cast.
The era of Spring is over.

Riadne's bloody coup on the Summer Solstice changed Arlo's life forever. In one fell swoop and a fool's bargain, she lost both her family and free will to the newly crowned High Queen. Now, with Arlo forced to use he...