A French court was set to hand down a verdict Wednesday in the trial of serial killer Michel Fourniret and his wife, accused of helping lure victims to satisfy her husband's obsession with virgins.  Prosecutors are demanding life sentences for Fourniret and Monique Olivier, whom they described as "cruel and inhuman criminals" in one of France's most gruesome cases in recent years.  Dubbed the "Ogre of the Ardennes", Fourniret, a 66-year-old machine operator, has admitted to the kidnap, rape and murder of seven young girls and women between 1987 and 2001.  His wife, a 59-year-old nurse, is accused of helping him trap his victims, who were aged between 12 and 22. They were shot, strangled or stabbed to death.