The battle of Evernight - Cecilia Dart-Thornton (The Bitterbynde series #3)

Once upon a time Angavar, the great High King, became trapped in mortal Earth along with his two brothers and servants, Morragan the Raven Prince, after the Gate to the Faêran Realm was closed on them.

Now, many centuries later, the fugitive who calls herself Tahquil has at last discovered the truth. She is being hunted down because she alone can reopen the Gate to the Fair Realm, and Morragan plans to use her for his escape from exile. However, Tahquil’s past is not clouded by a potent spell called the Bitterbynde, and she is also dying from a mystical wasting disease, whose cure she has found in Evernight – at the fortress of the Raven Prince himself.

Nothing can prepare her for the horrors that is Evernight, where magic rules, the sun is banished – and the Raven Prince’s whims shape the weather, the elements, the very nature of existence. Yet Tahquil resolutely refuses to be a mere pawn of these Faêran, who are as merciless as they are beautiful.

As Morragan’s wights and Angavar’s knights become locked in a battle that could engulf all of Erith, Tahquil’s quest for the truth finally hinges on a desperate choice. If she opens the Gate, will she thereby save two worlds – or instead destroy all and everything she holds dear?