I really thought this would be my least favourite to date since it's a Psy-Psy pairing. But this is why it worked for me: 
 1) Katya had already broken her conditioning so she wasn't clinging onto Silence - in fact quite the opposite. Not that I haven't loved StS, VoH etc but it made the book different instead of a rehash of past books just with different names. 
 2) We saw more of the Shine organisation, a different facet of the war against the Council, and with this came new information and new faces 
 3) The whole world-building and the thickening plot-line, this is definitely a PNR to be read in order! 
 4) The POVs, I love the appearance of past couples - there are so many of them nowadays! 
 5) The Arrows - is it just me who finds something about the Arrows really attractive intriguing? It seems like there is more Arrow goodness to come, yay! 
 It was an emotional end and I hope that we go back for a few POVs from the Shine organisation just like how we get them from SnowDancer, DarkRiver, Councilors, NightStar etc.