Feat:Feat U

Urban Tracking
You can track down the location of missing persons or wanted criminals, within communities.

Benefit: To find an individual's trail, or to follow a trail for 1 hour, requires a Gather Information check. You must make a Gather Information roll for each hour you search, as well as each time the trail becomes more difficult to follow, such as when it takes you to a different part of town. The DC of the check, and the number of checks required to track your quarry, depends on the community and the prevailing conditions.

If you fail a check, you can retry after 1 hour of questioning; the DM should roll the number of checks secretly, so the player doesn't know exactly how long it will require. You can cut the time between checks by half (from 1 hour to 30 minutes), but you take -5 penalty on the check. Obviously this feat will not allow you to locate someone who has gone beyond the boundaries of the community, but it could inform you that they have done so.