: The plot involves traveling to other dimensions—worlds of flames, ashes, and shadows—to stop the apocalypse being brought by Hades and the High Command of Darkness. Book Details
: Lucifer has escaped from purgatory, leading the "Order of the First" to turn angels against each other and spread chaos. El Senor De La Obscuridad Kim Richardson epub
: A major focus is Alexa’s relationship with Milo, who has sacrificed himself to save the angels from his father’s wrath. : The plot involves traveling to other dimensions—worlds