Anthropomancy

Anthropomancy is the magical art of attempting to divine the future or gain information by reading human entrails. It's mentioned in Dead Beat.

Description
It is extremely dangerous and powerful magic. To do it requires killing someone which means a death sentence from the White Council. It involves an "utter disregard for the sanctity of life".

Dead Beat
In Dead Beat, Corpsetaker, posing as Alicia Nelson murders an anthropologist, Dr. Bartlesby, at the Field Museum of Natural History with the aid of her ghoul assistant, Li Xian. Bartleby's body was taken to the Forensic Institute. Waldo Butters takes a look at him for Harry and describes the extensive and hideious wounds on his body. The damage to his internal organs leads Harry to believe, or guess, that the murder may have partly invovled anthropomancy.