This is the 3rd book in the 'Fever' series by Karen Marie Moning and the ongoing story of MacKayla Lane.
MacKayla Lane is a pampered Southern girl from a small town in Georgia whose hardest decisions in life have been matching her nail polish to her her designer outfit. That is until her sister was murdered in Dublin, Ireland and Mac - not happy with the way the investigation was going, flew to Dublin to confront the lead detective on her sisters case.
Mac has since learned that she and her sister were adopted when they were very young. They were born in Ireland and part of the adoption agreement was that they never find out about their birth and that they never step foot in Ireland again.
Mac has a special power, she is a sidhe-seer, this means that she can see the Fae - see through their glamour to the real being below the surface. This also means that she is a target, the Fae do not like sidhe-seers and they want to get rid of Mac.
The ability to see the Fae is not Mac's only power, she can also sense their relics and now she is looking for the baddest relic of all, the Sinsar Dubh, a book that holds a wealth of Fae knowledge. The walls between the human and Fae world is thinning and more and more Fae are crossing over - with Samhain approaching a few humans are trying to strengthen the walls - to stop the Fae from coming through. Some think that the Sinsar Dubh is the only way to permanently stop the Fae. Others think it is too late.
Can Mac and company, Barrons the owner of the book store where Mac works and lives and the person who has saved Mac's life twice now - and V'Lane a Fae prince who wants to get in Mac's pants but has also saved her life - find the book and stop the invasion before it's too late?
This book was slow going at first and dragged in several places after that - but man did it pick up in the end. The ending was killer and now I have to wait another year before I can find out what happens next.
I give this book and the entire series a 4 out of 5 stars. :)