What is the main conflict in Death Du Jour by Kathy Reichs?

Tempe Brennan, is back attempting to help solve murders in Montreal and mold young minds in Charlotte. In this novel, Tempe helps exhume the skeleton of a nun who is a candidate for sainthood, only to discover stories of the nun's paternity are false. At the same time, Tempe is called to a house fire where she helps excavate the skeleton of a woman who was a victim of a gunshot prior to the fire. This skeleton, and other bodies found at the house, send Tempe and Detective Andrew Ryan in search of callous killers in an investigation that will come too close to home for Tempe. Death du Jour is a forensic crime novel that compares to bestsellers in the genre and holds its own.