The calling - Cate Tiernan

Morgan, Hunter and other members of their coven go to New York for a few days in search of the Amyranth witches. Hunter, a Seeker for the Council is looking for Killian, a young witch in danger. It seems that Ciaran, Killian's father is looking for him and intending to wipe his magic. After many false leads and strange meetings it becomes clear that Ciaran is actually seaching for Morgan, wanting to take her power. He is not in the end able to do this as he suddenly realises that Morgan is his own child. Morgan is horrified to be the child of someone she considers evil. The book ends as she
breaks up with Hunter because she believes she has inherited her father's evil and will damage all close to her.