El descenso de la oscuridad (Nytefall, 3)

Astraea, the star maiden, must race against time to break the curse that holds her lover, Nyte, captive, all while still grappling with a grave betrayal. She must decide whether accepting the hand of darkness—or rather, that of her enemy—might become an alliance to bring him back. But with the day lost and the kingdom on the brink of ruin, Astraea and her friends must resume their trials to find the missing pieces of their broken key, the only weapon capable of slaying the wrathful gods bent on dominating the mortal world. The dragons will be unleashed, and they too must choose sides. Gods will fight gods, parents will fight children, and all will ultimately face the end of the world. For when the blood that binds them becomes the weapon that can destroy them, the two lovers must choose whether to risk everything or make the ultimate sacrifice of their lives.