Pyroette
A subcatagory of pyromania, the word 'pyroette' is derived from 'pirouette' and 'pyromaniac'. It decribes a person who sets fire to ballerinas while they spin, as to see the spinning fire mixed with the twisted satisfaction of seeing another human being burn.
Don't go near Sidford in a tutu, you might get set on fire by the pyroette that lives there!