It was amazing and mindblowing and exquisite and a million other synonyms I can insert here. Let me just start by saying that I hate when there are two AMAZING guys and the heroine has to choose between them. It just pisses me off. So I was a bit wary when I started this book because I anticipated that either Jem or Will will sacrifice themselves for Tessa or just die or turn evil or remain friendzoned forever or things like that. That's what usually happens. 
 So this is when my congratulations for Miss Clare comes in. She weaved her tale so skilfully and created a great storyline that I wasn't at all disappointed by Tessa's decisions by the time I read the epilogue (although I did feel that waiting 130 years was cruel for Jem). I love both Jem and Will; they were great characters and contrasted eachother deeply. The ending was perfect. 
 Bonus point to whoever illustrated the covers for the Clockwork trilogy. It's incredibly realistic and it helps that the guys on the first two covers are really hot.