Balefire Omnibus - Cate Tiernan

Seventeen-year-old Thais Allard never knew about her sister-or her legacy-until her father died. Now Thais has been sent to live in New Orleans, where she meets her identical twin, Clio Martin, and learns that they both possess powerful magick flowing in their blood.

It's not an easy discovery for either sister. While Thais struggles to unlock the magick within her, fiery Clio must learn to share the spotlight with her newfound twin. Together, they are capable of greater magick than they realize - and there are those who will stop at nothing to ensure that they don't live to reach their full potential.