It is the story of two couples in one book. Gabriella is Josie's sister who was transformed by prince Mikhael many years ago after she got fatally stabbed by a vampire but no one cared to take responsibility for her and therefore she never learned anything about the Carpathian way of life. She was in love with Gary Jenson ever since before her transformation and believed she was his lifemate. They were wrong about that and it seemed everyone knew but no one cared to inform Gabbie the importance of a lifemate to a male Carpathian. Trixie is Teagan's 60 years old grandmother. Gabbie and Trixie's lifemates were two of the ancient warriors in the monastery. 
 The book is 90% sex scenes and about 10% other parts of the story. I don't find extreme details of sex scenes between a 60 years old grandmother and a man who is a few centuries old but looks like someone in their late 20's/early 30's sexy so I skimmed/skipped through those parts. Gabbie's lifemates, Alek was your typical old ancient bastard. Feehan's typical caveman, dark, abusive alpha male and very unlikable. I was disgusted by him and his rights to grab gabbie and use her like a slave because in his mind she dishonored him by falling in love with another man. I was more disgusted by Mikhail to allow such abuse take place. I found Gabbie very immature and selfish. Trixie and Fane were likable but I cringed when I read the first few sentences of the sex scene and needed to bleach my mind. 
 I basically forced myself to finish this book just to find out what was happening with Gary.