The mayor of New York has a daughter who's missing and in danger. Detective Michael Bennett has a son who's in prison. The two strike a deal. Bennett and the mayor have always had a tense relationship, but now the mayor sees in Bennett a discreet investigator with family worries of his own. Just one father helping another. The detective leaps into the case and sources lead him to a homicide in the Bronx. The victim has ties to a sophisticated hacking operation -- and also to