Workshopping an Antagonist - H. H. Holmes

I am running a V20 game using the original 1E setting and materials - starting in Gary, eventually moving to Chicago.

But in introducing my own elements - and in keeping with the original material’s love of including various other famous Chicago historical figures as vampires - I was thinking it could be fun to include H. H. Holmes as an antagonist. Going by another name, of course - Holmes was an inveterate con man and liar in addition to being a serial killing monster. The players wouldn’t know who he was, at the start.

However, I am hung up on whether this character really works from a rules perspective. It seems like he should have gone wight decades ago. He has no conscience or sense of morality to retain Humanity, and he also didn’t have the sort of strong convictions or ethical frameworks that would allow him to follow a Path.

I am wondering if there is any precedent in the game for a character who simply unreservedly embraces the Beast and its urges, but maintains enough self-control and cunning to maintain a mask of sanity in public, and keep his monstrosity behind closed doors?

If the answer is just that this doesn’t really fit the rules, fair enough! But if anyone has any thoughts on how to make a character like this work, I would love to hear them!