PI Magazine
In-depth coverage of the private investigations field.


Private Detectives - Wikipedia
A Wikipedia entry on private detectives.


John McMahon, Private Detective in Houston, Texas
Houston Private Investigator with 27 years experience, providing investigative services to corporations, attorneys, insurers, and private individuals.


Dept. of Labor - Occupational Outlook
An excellent synopsis of the field, its working conditions, salary, etc. Please note, however, that for DSI the earnings estimates are inaccurate; because of the results we get, our firm's rates tend to be higher than others.


Infoguys - Articles by PIs
Tips and how-to information on aspects of the private investigator's craft.


Spyville.com
Some of the tools of the trade.


eInvestigator.com
Private Investigator and law enforcement resources.


Searching for a PI
An Articlefeeder.com piece on how to find the right PI for you.