Deep Geeking: The Technomage trilogy, written by Jeanne Cavelos, is subtitled The Passing of the Technomages. The books in the series are "Casting Shadows", "Summoning Light" and "Invoking Darkness". This trilogy tells the story arc of the Technomages from Galen's time as an initiate, during the slow rise of the Shadows new influence throughout the galaxy, the discovery of the truth behind the links between the Shadows and the technology that gives the technomages their powers, the division amongst the mages on whether they should stay and fight the Shadows or if they should flee, and their involvement in Sheridan's mission to destroy Z'ha'dum.