| Business | Phone |
| Pennell & Assoc Inc 5706 Southern Cross Dr, Rockwall 75032 | (903) 872-9062 |
| Global Investigative 496 National Dr, Rockwall 75032 | (972) 771-6111 |
| John Bullock Private Invstgtr 1106 N Lakeshore Dr, Rockwall 75087 | (972) 722-7790 |
| Sources Unlimited Rockwall 75087 | (972) 771-5228 |
| Reynolds' Investigative Svc Po Box 1976, Rockwall 75087 | (972) 771-8339 |
| Probe Investigative Svc Po Box 1772, Rockwall 75087 | (972) 772-8000 |