A Circle of Ashes by Cate Tiernan (Balefire #2)

While Daedalus schemes to use the coven's power for his own dark purposes, seventeen-year-old twins Clio and Thais seek to learn who is trying to hurt them and, in the process, discover that Thais's magick has explosive power. This second book in the Balefire series picks up right where A Chalice of Wind left off. The twins continue to develop as characters, as do the secondary characters in the series. The book, however, fails to answer the majority of the questions left at the end of book one, and only brings up more questions. Readers will be seeking the third installment immediately.