The Reckoning by Kelley Armstrong 391 pages

This is book 3 in the Darkest Powers trilogy and yeah, you do need to read the first two books to properly enjoy the conclusion. To recap, Chloe is a 15 year old necromancer who has more feelings for werewolf brother, Derek and than his more popular sorcerer brother, Simon. Having escaped from the evil doctors with the Genesis project, they are temporarily in a "safe house", protected by Andrew. They are trying to plan a way to release Aunt Lauren even though she had originally betrayed them to the Edison Group. Of course, they aren't really safe and find themselves in worse straits. Is Tori, a fellow escapee to be trusted? Powerful spirits try to help. Chloe is trying to figure out who she is really attracted to and makes a connection with her long-gone mother. Satisfying conclusion to a popular series.