| Five Star Detective Agency, Inc. | *Statewide*, IL | (630 or 847) 774-1000 |
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| Verdict Resources, Inc. | nationwide | 888-800-8895 |
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| The Intelligence Group | nationwide | 908.901.0112 |
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| Confidential Affairs Investigative Agcy, Inc. | IN, IL, MI | 219-985-1605 |
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| 3rd Degree Investigations, Inc. | nationwide | 919-872-2270 |
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| Gietzen & Associates, Inc. | nationwide | 888-779-2345
813-223-3233 |
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| CDS Group International LLC | nationwide | 402-462-9966 |
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| Tri-County Private Investigations of Missouri | nationwide | 816-407-1213 |
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| Investigation and Paralegal Group | nationwide | 314-642-6000 |
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| Workplace Criminalistics and Defense International | nationwide | 877-527-8706 or 713-353-3914 |
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| L.S.S. Consulting Inc. Legal and Security Strategics | nationwide | 248-366-5020 |
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| The John Haus Group (Va. DCJS 11-3303) | nationwide | 1-866-788-7010 |
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| Kalmbach and Associates | nationwide | 888-540-0601 |
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| Lakeside Investigations, P.C. | *Statewide*, IL | 800/636-1511 |
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| DIBS USA - Computer Forensics | nationwide | 917-202-0551 |
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| OmniTrace Corporation | nationwide | 888-965-6696 |
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| Smith Investigations, Inc. | Danville, IL | 217-446-5373 |
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| Middleton Investigative Services | nationwide | 866-647-8091 |
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| LandAmerica Information Company | nationwide | 800-368-3380 |
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