I know lots, but its not like there is a genera "detective bureau" at HPD. They break it down into divisions: homicide, narcotics, vice, etc. What are you specifically trying to do? If you are calling them to report a crime you can't generally call a bureau - you have to file a report with a patrol officer and they refer it to the appropriate bureau. In any case, you haven't provided enough info to get the answer you need.
