The novel “The Diamond Mask” by the popular American writer Julian May is part of the “Galactic Commonwealth” trilogy. It is almost impossible to resist the destructive power of evil. Only unique metapsychic abilities enable Dorothea the Diamond Mask and Jack the Bodiless to uncover the secret of the dangerous alliance between the Furies and the Hydra. But this is not enough to win a mortal battle with the forces of darkness.