Assaulted by the bitter cold of a Montreal winter, Dr Temperance Breman, digs for a corpse where Sister Elisabeth Nicolet, dead over a century and now a candidate for sainthood, should lie in her grave. A strange, small coffin, buried in the recesses of a decaying church, holds the first clue to the cloistered nun's fate.
The puzzle surrounding Sister Elisabeth's life and death provides a welcome contrast to discoveries at a burning chalet, where scorched and twisted bodies await Temperance's professional expertise.
Who were these people?
What brought them to this gruesome fate?
Homicide Detective Andrew Ryan, with whom Temperance has a combustive history, joins her in the arson investigation. From the fire scene they are drawn into the worlds of an enigmatic and controversial professor, a mysterious commune, and a primate colony on a Carolina island.