Luke's eyes had a hunger too them. Not for blood, but for the knowledge his seniors possessed. Let's see if I can get them interested. "Well, I have a theory regarding the flow of vitae through the body, if you're interested. As I see it, while kindred bodies are clearly dead, but life can be imitated by forcing blood to the surface, it seems like an inefficient process. If we could learn to control our now redundant organs - primarily our heart - then it might be possible to maintain the blush of life through the flow of vitae rather than it's expenditure. The Coil of Souls already allows for similar techniques regarding facial tics and body language, and my theory follows the same principle."