Heir of Fire may seem daunting at first because of its size, but once the plot started to progress, I really enjoyed it. Maas has created such an amazing fantasy world filled with complicated characters. She's definitely taken it a step further with her plot and incorporated a lot of details and story lines that kept me glued to the pages. Like I said, it is a rather slow start, nothing much going on at the beginning, but as the secrets of each character slowly comes out, each of their lives unravels in interesting ways that sets the tone for the rest of the series. 
 Here Celaena is separated from the other characters, going on a self-discovery journey of sorts where she comes to terms with her past and her destiny. Dorian and Chaol's plot lines also progress, although Dorian's more so than Chaol's. Dorian's life changes drastically in this book and things don't look so good for him in the end. I'll admit, I was a bit disappointed with how little Choal progressed, or rather, how long it took him to finally make the right decisions. As much as I loved him in Crown of Midnight, I didn't really like him so much in this book. He's so confused about his feelings and what he wants to do, which in turn, got me all frustrated with him. So many times I wanted to smack him upside the head and knock some sense into him. I still have high hopes for him though and I hope Maas turns things around for him. 
 While I enjoyed the book for the most part, there were certain chapters I didn't care for at all, especially pertaining to the character named Manon. I understand establishing this character will somehow become essential to the overall story, as she gets worked into the lives of the other characters, but her chapters bored me, honestly. We also meet other important characters as well as discover more of the King's secrets, which were much more interesting to me. 
 I have to say that although I really love Celaena, there are some things about her that kind of bug me. First, let me say that I adore her overall. Her quick wit, fierce loyalty, and kind heart make her a standout female protagonist. Her dialogue with some of the male characters are just plain hilarious and so entertaining. Not to mention her love of books just makes me all giddy inside. She's also incredibly skilled in her craft and often times, pretty deadly. However, I was expecting more of a "killer personality" in her. When I initially went into this series, I was expecting a true assassin who always catches her targets, and who takes care of them in wickedly delicious ways (I don't know what that says about my character that I like to read about that kind of thing, but that's a different matter altogether). While we do get moments where her true assassin nature comes to play, it's mostly forced out of her because someone hurt her or someone she cares about in one way or another. That's fine and all, don't get me wrong, but it just wasn't the impression given before you go into this series. Celaena has come a long way since Throne of Glass, and after the revelation that happens in Crown of Midnight, Heir of Fire sheds even more light into her past and why she is the way that she is. I'm looking forward to seeing how Maas writes her character from now on considering everything that happened in this book. 
 Easily my favorite character from this book would have to be Rowan. Ugh! So awesome! His relationship with Celaena is such a captivating one. You would think it bordered on the romantic line a few times, but when it came down to it, it exemplified an amazing friendship that cut deep on so many levels. Plus, he's just a great character overall. Loved him! I also have a soft spot for Aedion, too. 
 Since I binge read this series, for the most part, I got a more comprehensive look at the series so far and I really love it. I don't LOVE it like some others do, but it's definitely an amazing fantasy series and I can't wait to read the next book, that's for sure. Heir of Fire is pretty much the game-changer for the series, so much happened, characters grew and developed even more, secrets were revealed, and the plot thickened quite a bit. Overall, I really enjoyed this book. It was a strong installment in the series, despite its how the beginning dragged a bit. The wait for the next book will be torture!