This is the first book I've read in this series. It's not a series that I follow, but going by this book, I assume they all can be read as Standalones. I really enjoyed this read. I loved the dual POV's we get here, as well as the layers we are shown with the main characters.
Sergei is just... *sighs* and Bianca is such a sweetheart. I loved these two together. Their chemistry is white hot. Concerning the emotional as well as the physical.
The subplots give seasoning to this story, and the last 3 chapters were full of suspense. Had me on edge.
I would definitely recommend this read. I plan to tackle the rest of this series, in order, at some point :)