During one of the hottest summers on record, Dr Temperance Brennan is haunted by a string of horrifying events. First, the bones of a newborn baby are discovered in a wood stove. The mother is nowhere to be found. Next, a plane flies into a rock face. The dead pilot and passenger are burned beyond recognition, and covered in an unknown substance. During one of the hottest summers on record, Dr Temperance Brennan is haunted by a string of horrifying events. First, the bones of a newborn baby are discovered in a wood stove. The mother is nowhere to be found. Next, a plane flies into a rock face. The dead pilot and passenger are burned beyond recognition, and covered in an unknown substance.