Hanrahan Investigations Group, Inc., is privately owned, based in the Chicago area and has been providing investigative services since 1956.

Over the past forty years valuable sources and contacts have been developed that enable the Hanrahan Investigations Group to satisfy it's clients needs.

This Chicago area based company combines cutting edge technology and provides our customers with a quality service that is unsurpassed. Our client relationships are managed with absolute Confidentiality.

The staff of Hanrahan Investigations is comprised of experienced investigators, including former FBI agents, local governmental and police officials and technically trained personnel.