Bitterblue is a young adult fantasy novel written by American author Kristin Cashore.

She is determined to restore peace and justice to her land, and rebuild the kingdom left in ruins by her father, King Leck.

She discovers that the two young men and their cohorts are involved in an underground movement to educate the kingdom's people.

Hava, who unintentionally helped in Bitterblue's attempted kidnapping, is a Graceling with a talent for disguise.

Bitterblue manages to decipher hidden messages from her mother and discovers the depth of her father's depravity.

Katsa returns from her expedition to the unknown East behind the mountains with Lady Fire, Pikkia and others from the Dells as they are interested in allying.

Bitterblue begins to found ministries to help Monsea properly recover from Leck's reign.

Bitterblue was named a New York Times best-seller, a Kirkus Reviews and Publishers Weekly Best Book of 2012, and the 2012 American Library Association Best Fiction for Young Adults.