| Business | Phone |
| A Adam Detective Agency Inc 514 Springdale Dr, Pittsburgh 15235 | (412) 793-7738 |
| Adams Detective Agency Po Box 17073, Pittsburgh 15235 | (412) 372-0022 |
| Audits & Investigations Llc 1627 Chestnut Ridge Dr, Pittsburgh 15205 | (412) 787-0761 |
| Barker & Assoc Pittsburgh 15235 | (412) 380-2530 |
| Barrett Detective Bureau 4652 Desdemona St, Pittsburgh 15217 | (412) 521-2900 |
| Contemporary Investigative Svc 978 Lessing St, Pittsburgh 15220 | (412) 928-0912 |
| Corporate Investigations Inc 2275 Swallow Hill Rd # 500, Pittsburgh 15220 | (412) 429-2400 |
| Fanning Investigative 159 Castle Shannon Blvd, Pittsburgh 15228 | (412) 334-4329 |
| Fanning Investigative Svc 1725 Washington Rd # 105c, Pittsburgh 15241 | (412) 833-8820 |
| Finley Consulting & Invstgtns 4885a Mcknight Rd # 300, Pittsburgh 15237 | (724) 934-5007 |
| Hannon Legal Svc 310 Grant St # 1231, Pittsburgh 15219 | (412) 281-9205 |
| Holmes International 2031 Blairmont Dr, Pittsburgh 15241 | (412) 854-1100 |
| Janus Security & Investigation 3877 Haven St, Pittsburgh 15204 | (412) 331-1575 |
| K L Guerra Investigators 3952 Deervue Dr, Pittsburgh 15227 | (412) 881-0549 |
| Klink & Co Inc 603 Stanwix St # 300, Pittsburgh 15222 | (412) 201-9123 |
| Ogden Security Police 82 E Crafton Ave, Pittsburgh 15205 | (412) 922-2487 |
| Phillips Investigative Group 239 4th Ave, Pittsburgh 15222 | (412) 325-1010 |
| Specialty Private Invstgtrs Po Box 18501, Pittsburgh 15236 | (412) 650-8550 |
| Steven M Cook Legal Invest 101 Smithfield St, Pittsburgh 15222 | (412) 261-3833 |
| Unified Investigation-Sciences Po Box 8024, Pittsburgh 15216 | (412) 561-6606 |
| Windsor Investigations Po Box 8374, Pittsburgh 15218 | (412) 371-8000 |