Let me preface this review by saying I've read Silver's Frozen Waste series, so I knew a bit about what to expect from her writing style. I'll also say that I completely missed the fact that this was a Harlequin book. I picked it up because the story sounded interesting, not because I wanted to read some smut. 
 So, I did like the story, what little we got of it. Dagan's brother has been killed, which should be impossible because he's a soul reaper. All factions of the underworld are trying to find his body, either to resurrect him or keep him dead. Roxy is part of a faction that wants him to stay dead, while Dagan obviously wants his brother to be alive. From there, the story is peppered with tidbits of information, though you really don't start to put the pieces together until about 95% of the book is finished. The majority of the focus, of course, is on Roxy and Dagan's relationship. You would think that was weird, because other than the first couple chapters, which take place eleven years prior, they don't reunite until about halfway through the book. Yet they constantly think and dream about each other, usually in sexy ways. The first sex scene between them is actually a dream that Roxy is having that I think Dagan sees as well. Soul reapers don't dream, but he seems to have waking dreams that are the same as Roxy's. It's not entirely explained, but I'd hazard a guess that because she drank his blood, they're bonded in some way. So while the plot does move, albeit very slowly, most of it is filled with Roxy or Dagan's inner monologue about each other. And then, of course, when they do meet, it's a back and forth fight until they end up having sex, which they do for a whole day despite the ticking clock on the plot. 
 The issues I had with Silver's writing in Driven and Hidden (under the name Eve Kenin, if anyone is confused), are still prevalent in this series. The repetition. Never about the plot, of course, always about things pertaining to Roxy or Dagan personally. The pointless POVs. Silver has a habit of giving the bad guys a POV, but it's only two or three times throughout the entire book, and it's used to vaguely hint at the plot. Even Lokan, the dead brother, has two, both to give away key hints to the plot, especially his second one. As usual, they're short and are kind of a waste. Roxy and Dagan manage to figure out these hints all on their own, so we, the readers, really didn't need to be poked with it ahead of time. 
 The story ends pretty abruptly. We find out who killed Lokan, but not why, and said person escapes. Lokan's body still isn't found. Since this is a trilogy, no doubt this will be dragged out for the other two books. Sins of the Soul focuses on Alastor, Dagan's brother, so I have a sneaking suspicion that each brother, except Lokan (there are four brothers), are going to find their true love and then at the end, save their brother like an afterthought. 
 Edit: Okay, there are actually four books and the last one focuses on Lokan (though I am unclear whether it is a prequel or not) and I swear that I saw somewhere that this is a trilogy, but whatever, my mistake. Still think that Lokan's rescue will be an afterthought after his brothers find some girls to play house with. 
 This would have been better if the focus was on the plot, not the romance, though it is my fault for not realizing that this was a romance novel. Still, the plot was interesting enough, there just wasn't enough of it.