"The Power of Five" by Elizabeth Lenhard - Will is new to Sheffield institute, but quickly befriends Irma, Taranee, Cornelia, and Hay Lin, four girls with whom will learns to share her mysterious supernatural abilities. Together they discover that they need to protect Earth from the evil of Metamoor. The girls have to command their newly discovered powers in their first battle against evil. (Book One in the W.I.T.C.H. series)