Category
Eyes of Chaos.
This weird ability lets a vampire see another individuals true nature and gives them the ability to see insanity and know how to bypass it -- it is the ability to perceive the order in chaotic, fractal patterns.
System
The vampire can see a pattern by making a Perception+Medicine roll (diff based on the intricascy of the pattern. Knowing a person's Nature at first meeting would be 10, after knowing them for a while would be 8, a secret code within a code would be 7, etc.) Nearly anything can contain several obscure patterns imperceptible to vampires without this power. Most are meaningless, but some are not.