Dev and Katya's story is so wonderful. My only complaint is that because Dev is the director of Shine that we are a bit removed from the Changelings we've grown to love in the beginning of this series. Singh kind of takes us out of their world and submerges us more into the Psy world and the world of The Forgotten. The Forgotten are those Psy individuals that decided not to submit to Silence in 1970 when the Council implemented it. They went Rogue and with their emotions intact began intermarrying with Changelings and Humans. Their abilities over the years have changed, weakened and mutated. 
 As we saw in Hostage to Pleasure with Ashaya Aleine, the Psy are trying to figure out if The Forgotten are any kind of threat to them. At the end of Mine to Possess Ashaya helps Jon and Noor, two children the Psy were experimenting on, escape the Psy labs. Ashaya then proceeds, in her book, to get her son Keenan and herself out of the Psy's control. As a result Keenan and Noor find each other as children and quickly decided they "belong" to each other. As children they see this as a huge friendship but the Changelings around them know when they are adults, they will be mates. 
 In this book, we discover just how different The Forgotten abilities can be. Dev, we discover, can control metal on some level. And Keenan and Noor's abilities are a huge surprise. Because of the Psy's lack of emotion and continued "weeding out of mutations" their own Silenced people are not seeing such changed abilities leaving them stuck while The Forgotten grow. 
 Because of the nature of the characters (Dev being the Shine director and Katya a Psy), we see more about the Psy's past than we do about the Changelings, which I for one find more interesting. Still Dev's character holds his own with a nature that is very much Changeling while never actually being so. We also see that The Forgotten see themselves as a group between Psy coldness and Changeling packs. So Dev's possessiveness in the story is no surprise. 
 Katya's brokenness when she first arrives is truly sad. Ming Le Beon is a Councilor for the Psy and has taken it upon himself to strip the mind of one of his scientists. Katya awakes at Shine to realize she's been tortured by Ming effectively destroying her Silence and making her an emotional member of society, only now she believes she's a Trojan Horse to lure in the director of Shine. 
 The thing that throws me is the intermittent letters and Sunshine reports we get throughout the book. The Sunshine reports become relevant later but still do not hold much interest for me. The reasoning is another example of how Silence is failing but it is less interesting that the story of Dev and Katya. As for the letter's, we do not discover their relevance until nearly the end of the story but they quickly shine a light on their purpose. 
 It is Dev and Katya's budding romance that really sets fire to the pages of this book. Without these strong characters, I think the book would have lacked something fundamental and left me wonder if I should read more. I do wonder how the next book will hold up when telling the story of the Enforcement Officer we met in Mine to Prossess Max Shannon. Still, the series overall, has been a good one and if you like a fantasy/paranormal type of romance then this is right up your alley.