| Pearne Investigation Agency | San Jose, CA | (408) 243-6066 |
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| Marin Associates | San Rafael (San Francisco), CA | 415-454-4558 |
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| Investigation and Paralegal Group | nationwide | 314-642-6000 |
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| Central Coast Investigative Services Incorporated | Salinas, CA | (831) 422-9111 |
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| OmniTrace Corporation | nationwide | 888-965-6696 |
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| Verdict Resources, Inc. | nationwide | 888-800-8895 |
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| IPSA Intenational, Inc. | nationwide | (510)748-1234 |
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| Arcy Professional Investigations, Inc. | Paradise, CA | 1-877-474-2729 |
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| James J. Wedick & Associates | Gold River, CA | 916-638-3566 |
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| PPS & Associates, LLC | nationwide | 888-433-4943 |
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| DIBS USA - Computer Forensics | nationwide | 917-202-0551 |
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| eFor, Inc. | nationwide | 209-832-7001 |
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| Nan-Lee Attorney Services & Investigations | Hayward, CA | (510) 667-9538 |
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| CDS Group International LLC | nationwide | 402-462-9966 |
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| Electronic Evidence Retrieval L.L.C. | nationwide | 504-483-0201 |
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| David L. Warkentine-Private Investigator/Polygraph | Channel Islands Harbor, CA | 805-653-6626 |
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| Michael Wolf Enterprises | Calabasas, CA | (818)591-5986 |
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| Gietzen & Associates, Inc. | nationwide | 888-779-2345
813-223-3233 |
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| Gladding & Michel, Investigative Offices | Burlingame, CA | 650-692-1140 |
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