MCNALLY'S SECRET Playful, seductive, irresistible--this bestselling masterwork of fatal passion  and greed introduces Lawrence Sanders's most wickedly charming sleuth.  Meet Archy  McNally, a freewheeling playboy who specializes is "Discreet Inquires" for the rich and  not-so-discreet.  Beneath the glaring sun of Palm Beach--and behind the lowest crimes of  high society--McNally is paid to keep family skeletons in the closet.  But when it comes  to sex and scandal, McNally has a few secrets of his own...