Sisters of Isis. [Volume 1]. Book one, The summoning. Book two, Divine one

Meri, Sudi, and Dalila are three girls who live in Washington, D.C., but have little else in common. Or so they think. When an ancient magic is revealed, so are their true identities as Sisters of Isis. The Summoning After receiving an anonymous invitation to dinner at the Sky Terrace, Sudi meets a mysterious guy named Abdel, and two other girls, both strangers. Sudi doesn't know whether to laugh or run when Abdel claims that she and the other girls are the descendants of Egyptian pharaohs, powerful ancestors who have given them magical gifts and powers of transformation. Three fifteen-year-old girls living in Washington D.C. learn that they are the direct descendants of Egyptian pharaohs, with special powers that will allow them to battle demonic members of the Cult of Anubis, who are trying to return the universe to the chaos from which it sprung As the three fifteen-year-olds, Meri, Sudi, and Dalila, adjust to their new roles as descendants of Egyptian pharaohs charged with protecting the world from evil forces, they must face Apep, a giant serpent from the Netherworld brought to Washington, D.C., by the Cult of Anubis A stunning paperback bind-up of books 1-2 in best-selling author Lynne Ewing's series about three girls who discover they are descendents of Egyptian pharaohs