California
American Detectives 
Costa Rican Investigations S.A
Ashley T. Fauria Private Investigations
Barbary Coast Investigations
BLP Global Investigations
Cooke and Associates, Inc.
East Bay Detective Agency
Filley & Associates
Fog City Investigations
G.A.B. Investigations
Gladding & Michel Investigative Offices
John A. DeMarr, PI
John E. Conway & Associates
OPSEC Ivestigative Services 
Sankey Investigations, Inc.
The Rat Dog Dick Detective Agency
Tactical Investigations
Theroux Investigation
Uretsky Investigation and Security
West Coast Detective Academy