Third and last novel in the Grisha trilogy. 
 Things continue much as they did in the second novel. Alina & Co encounter setbacks and then make small small steps forward. The group goes on to find the last amplifier and try to defeat the Darkling and his armies, all the while being hunted down. 
 Overall the stories does quite a few back-and-forth's, but these are intermingled with enough new backstory elements and a few good plot twists that these are not all that noticeable. The love square with the prince, darkling, hunter and Alina continues, but is satisfyingly resolved. The story ends well and on a satisfying note, though not all the romance shippers will be satisfied.