The plot also got extremely convoluted and I had trouble keeping up. There were too many characters with their own plans and agendas, and they were connected in various ways that were hard to keep track of. In fact, with all of the location jumping, I would forget about what was happening in previous locations until Yelena and Co went back there. Yelena was constantly making promises to help everyone everywhere, which just added to the too many separate plots list. I eventually gave up trying to keep everything straight, and just kept reading without absorbing much.
I did like how fire played a different role than what I was expecting. I don’t want to spoil anything, but it involves yet another one of Yelena’s unique abilities, which I wish had been explored more. This series could have benefited from an extra book or two rather than being a trilogy. We would have gotten to see Yelena grow into her powers, and Fire Study wouldn’t have felt like too much information in too few pages (even at 441 pages!).
The ending was fitting though. I liked watching Yelena go from being unsure and afraid of her powers to embracing them and becoming a kick-ass magician! I also loved the reveal of the origin of the Commander’s secret; very interesting! Overall, this one wasn’t as good as the previous two books, but it was a pretty good ending to the series.