The Mogriffs

Phobos sends shape-shifting monsters into Meridian to pose as and discredit the Guardians so Elyon will lose what little trust she has left in her friends. While the real Guardians do battle with the evil twins, Cornelia and Caleb try to persuade Elyon that Phobos is not as good as she believes, but she will not listen. Caleb does something to shake Elyon's faith in her new brother: he bows to her. Unnerved by this, Elyon is starting to suspect that Phobos is not telling her everything. Caleb takes the Book of Secrets and there are the plans for Elyon.