| Business | Phone |
| Aaa Process Svc Po Box 21788, St Louis 63109 | (314) 351-7979 |
| Adams Investigations Inc 7229 Manchester Rd, St Louis 63143 | (314) 647-1366 |
| Advanced Investigative Svc 8000 Bonhomme Ave # 220, St Louis 63105 | (314) 721-5654 |
| Alliance Investigation Svc Po Box 38638, St Louis 63138 | (314) 741-0082 |
| Archway Investigations 225 S Meramec Ave, St Louis 63105 | (314) 725-7530 |
| Associated Research Svc 225 S Meramec Ave # 203, St Louis 63105 | (314) 725-7575 |
| W & M Investigations St Louis 63117 | (314) 424-7344 |
| Unified Investigation Sciences 10765 Indian Head Ind Blvd, St Louis 63132 | (314) 423-8701 |
| Urban Investigation 111 Church St # 210, St Louis 63135 | (314) 522-8729 |
| Us Investigations Svc Inc 55 Westport Plz, St Louis 63146 | (314) 579-2424 |
| U S Locator Svc Po Box 140194, St Louis 63114 | (314) 423-0860 |
| Special Services 1309 Convention Plz, St Louis 63103 | (314) 421-1800 |
| St Vrain Resources 11939 Manchester Rd # 264, St Louis 63131 | (314) 780-8711 |
| St Vrain Resources 2683 S Big Bend Blvd, St Louis 63143 | (314) 645-1710 |
| Research Consultants Group Po Box 28708, St Louis 63146 | (314) 275-8717 |
| Rey Abbott Detective Agency 11674 Baptist Church Rd, St Louis 63128 | (314) 729-1463 |
| Private Eyes Po Box 515227, St Louis 63151 | (314) 416-1558 |
| Pdi Investigations 211 S Central Ave, St Louis 63105 | (314) 957-9157 |
| Meridian Claim Investigations Po Box 510747, St Louis 63151 | (314) 791-9990 |
| Neci Investigations Llc 11939 Manchester Rd # 222, St Louis 63131 | (314) 909-1208 |
| Mc Gough & Assoc Inc 10425 Old Olive Street Rd, St Louis 63141 | (314) 993-4978 |
| Mcdermott's Accident Investgtn 8701 Ivy Ave, St Louis 63123 | (314) 631-3993 |
| Jason Walls St Louis 63118 | (314) 497-5003 |
| Intertel Investigations Inc 5541 Oakville Shopping Ctr, St Louis 63129 | (314) 256-0073 |
| House Buyer Express 11737 Administration Dr, St Louis 63146 | (314) 993-6700 |
| Checkmate Po Box 2751, St Louis 63116 | (314) 832-2267 |
| G M Young & Assoc 2717 Sutton Blvd # 201, St Louis 63143 | (314) 645-1121 |
| Faithfull Investigations Etc St Louis 63135 | (314) 524-1914 |
| Executive Screening Svc 7777 Bonhomme Ave, St Louis 63105 | (636) 225-0770 |
| Eagle Eye Investigations Inc Po Box 190681, St Louis 63119 | (314) 832-3245 |
| Campbell & Assoc Inc 13050 Tapawingo Pl, St Louis 63127 | (636) 305-7200 |