You know, I'm not even sure how to categorize this book, or even this series. It's dark and gritty throughout, there's definitely some relationship stuff going on, but I'd hesitate to call it a thriller or a romance. Even though it ends up being a bit of both. 
 I read this entire series in the Dark Soul: The Complete Collection, so it's hard for me to break my thoughts up into each single edition. Review to be placed there in the next couple of days. 
 But I can definitely say that I am definitely glad I read this series. It wasn't always easy, it challenged me, and some things happened that I wouldn't be okay with in most circumstances - and honestly before this book I would have said never. But throughout it all I was rooting for both of these characters to get the HEA that they deserved. Both Silvio and Stefano (and even Donata) wormed inside my heart and made me care. Not something I would have really thought possible for a mob boss and sicaro. 
 Don't let the difficult things that these characters go through, and even who they are, turn you off from this series, it's well worth the read.