harry tiene de contactos a hadas, demonios y espiritus

All in all, squeezing information from faeries and spirits of the elements was a lot easier and safer-but Bob had turned up nothing in his search among the local spirits. They weren't always up on information to be had in the city, and Bob now resided in his skull again, exhausted and unable to help any further.
So I'd gone to the underworld for assistance. They know when you've been bad or good, and they make Santa Claus look like an amateur.

But Chaunzaggoroth was a popular source of information among wizards who went to the underworld in need of it. What bothered me was the possibility that one of them would get it. Chauncy was correct-there were a lot of people on the White Council who would be happy to see me dead. If one of them got my name, there was the chance that they would use it against me, either to kill me or to magically force me to do something that would openly violate one of the Seven Laws and have me brought to trial and killed