I see. 'Cause, and the GM will be able to help me out with this, I'm sitting here, having this dilemma of aesthetic vs practical.
The practical part of me is screaming to take the Red Vaults Background. The WP increase is nice, but the real prize there is the Jaded Talent, which means immunity to IP gain from non-supernatural sources. Sure, I have to start out with a few IP, but no more than 5. And hopefully, it'll be something more like 1 or 2.
On the other hand, the GM in me, the storyteller, wants to go with CPK. For two reasons. One, reading the background evokes the supernatural with me, with the description of the killer. Two, how awesome in-universe would it be to be known as the Arbitrator that solved a 10,000 year old serial murder case, and caught/killed one of the most prolific serial killers ever?
And if it helps, I'm not really interested in the Red Vaults Package as a whole...I just want Jaded. I really, really want Jaded.