Revenge on the River — Philippe Bouin

On a snowy night on the outskirts of Lyon, France, the son of the Somarec chairman is brutally attacked. The assailant leaves only one clue -- a cryptic message: Najuno, remember. A reminder of an environmental tragedy Somarec was responsible for twenty years earlier in Chile.

When the police get involved, a string of burglaries, more attacks, and vicious murders all lead back to Somarec. Clues pile up, one mystery becomes many, and nothing is as it first appears. Sister Blandine, a former detective who left police work behind to enter the convent, is on the case. With millions of dollars on the line and the threat of more deaths, Blandine uses her divine skills of deduction to peel away the layers of mystery.