Those in peril by Nicolas Freeling

Demoted to the art-fraud squad and living in a Paris suburb, Castang finds himself and his family involved in a series of sexual crimes Monsieur Dampierre, a renowned academic and TV personality is a man who takes a special literature class for privileged eleven-year-olds But all is not well when Henri Castang finds that two of his daughter's school friends show signs of child abuse Castang finds himself and his family moving ever closer to the dirty and dangerous world of criminal vice