| Business | Phone |
| Aai Legal Support Svc 4600 Chippewa St # 300, St Louis 63116 | (314) 457-9999 |
| Aegis Security & Investigation Po Box 29245, St Louis 63126 | (314) 630-4536 |
| Metro One Investigations 4225 Laclede Ave, St Louis 63108 | (314) 533-0010 |
| Mills Hoogstraten & Mills Inc 321 Westport Plz, St Louis 63146 | (314) 878-9831 |
| Henderson & Assoc Inc 507 N 13th St, St Louis 63103 | (314) 588-8005 |
| Catapult Advisors 231 Bemiston St, St Louis 63105 | (314) 854-9140 |
| Cobb Investigative Svc 11640 Gravois Rd, St Louis 63126 | (314) 729-1811 |