Heir of Fire by Sarah J. Maas

Heir of Fire follows many characters and their many adventures. Celeana has been sent to Wendlyn on the king’s orders to dispatch the royal family, however her attention becomes focused elsewhere when she meets the Fae warrior Rowan Whitethorn. He’s given the task by his mistress Maeve, Queen of Fae, to train Celeana and teach her how to learn to wield her magic.  

Their relationship is full of anger and hatred that eventually turns into  
trust and friendship. They uncover mysteries about each other together and form one of the strongest bonds in the series. Choal and Dorian on the other hand are dealing with the arrival of Aedion Ashryver, The Wolf of the North, in Adarlan and the consequences of the secrets they uncover  
together. The new characters introduced in this book show the wonderful  
potential for the way in which the series can ultimately end. 

This is defintely the favourite in the series.

Izabella Yr 11