Rule of Wolves (King of Scars Book 2)

Rule of Wolves (ISBN 9781510109186) by Leigh Bardugo is the second book in the King of Scars duology, set in the fantasy world of the Grishaverse. The story follows King Nikolai Lantsov of Ravka as he tries to protect his country from growing threats after a devastating war, while also struggling with a dangerous dark force inside him that he must keep under control.