MONTE CARLO—Despite having a job that demands total anonymity, Colin Richards, Great Britain's number-one field operative, has somehow built a reputation as a playboy and bon vivant of world renown. "All I can say is, he must be really incredible at sneaking into places, considering everyone knows what he looks like," Monte Carlo casino owner Nigel St. Clary said. "Can you imagine how great a spy he'd be if he were unknown?"