City of Glass is the (original) final installment in The Mortal Instruments by Cassandra Clare and I have to say, Clare definitely knows how to end a series with a BANG! 
 I really enjoyed how it all ended and the details of each character's story and past was so creatively developed that you could see how Clare truly did create a world of her own. The ultimate twist of fate that Valentine created was so crazy, I definitely didn't expect it. Clare continued to hint at certain things and reveal others, which kept me engaged and fervently reading on and on until the end. Each of the characters shine in their own ways in this book, and I thoroughly enjoyed the witty and entertaining moments that Alec and Magnus created both together and separately. I can honestly say I didn't really care for Simon at first, but by the end of the series, I couldn't imagine that world without him and he turned into one of my favorites! I also devoured the steamy and intimate scenes between Jace and Clary and I liked how their ending played out, whether for better or worse, I guess we'll see in the next book! 
 The final showdown with Valentine was pretty epic, and what he did/how he got to where he is now is enough for anyone to want to read this book. You get to see jut how far he was/is willing to go to fight for what he believes in, regardless of how evil or wrong others may think it is. After realizing his best-kept secret, you'll be flying through the pages to see how it all ends. Loved it! 
 Even though the next book, City of Fallen Angels is a bit different, I'm still very eager to read it and dive back into Clare's world. Definitely a series worth reading!