In season one, in "A Man on Death Row", Dr. Brennan expresses her stance on the death penalty; "I believe in the death penalty. There are certain people who shouldn't be in this world. The people who hacked hundreds of innocent children to death in Rwanda; beheaded them at their desks at school! The people who did that, they should be executed." In "The Woman at the Airport", Dr. Brennan is shown to have a strong dislike for plastic surgeons, believing them to be no more than "glorified butchers with medical degrees", and this dislike is voiced again in season 4, in "Cinderella in the Cardboard". In "The Woman in the Car", Dr. Brennan reveals that her third doctorate is in kinesiology, a field that would allow her and Angela to unravel how one of the bodies that had been found had been killed.