During the events of the novel Gehenna: The Final Night, Lucas was presented as the missing Prince of the Camarilla city of Houston. Halton as well as all the other Tremere of the city disappeared, and his Princedom was succeeded by that of an influential Brujah primogen named Karen Suadela.
It was said that even before the Prince's disappearance, Suadela had enough clout to challenge him, but she remained as a primogen content in being a lesser target. Nonetheless, she regarded Prince Halton as an easy sovereign to work around, and didn’t think he’d have had the strength of will to do what "needed to be done" in that domain once the Withering started.
- Gehenna: The Final Night, p. 76