| Business | Phone |
| A-1 Investigation & Security 314 S 56th St, Philadelphia 19143 | (215) 747-1257 |
| Academy For Scientific Train 1704 Locust St, Philadelphia 19103 | (215) 732-3349 |
| Advance Detective Bureau 10 E Chestnut Hill Ave, Philadelphia 19118 | (215) 248-1234 |
| American Tracing Svc 4524 Springfield Ave, Philadelphia 19143 | (215) 243-0744 |
| Beck Group Inc 9312 Milnor St, Philadelphia 19114 | (267) 632-7423 |
| World Wide Searchers Inc 1108 Glenview St, Philadelphia 19111 | (215) 725-2656 |
| Worldwide Detective Agency Inc 924 Cherry St, Philadelphia 19107 | (215) 922-2181 |
| Djc Investigations Spring Garden St, Philadelphia 19103 | (215) 988-0966 |
| Federal Process Server 1800 Jfk Blvd # 300, Philadelphia 19103 | (215) 567-4500 |
| General Security Systems 1339 Brandywine St, Philadelphia 19123 | (215) 627-7600 |
| Gill & Assoc 1500 Walnut St # 1103, Philadelphia 19102 | (215) 790-0800 |
| Hopson Associates 46 S 2nd St # 3, Philadelphia 19106 | (215) 629-0444 |
| International Bureau 616 S Front St, Philadelphia 19147 | (215) 922-7225 |
| Investigative Svc 7136 Valley Ave, Philadelphia 19128 | (215) 930-0228 |
| Jedi Investigative Svc 1222 E Hunting Park Ave, Philadelphia 19124 | (215) 292-6567 |
| Jel Private Investigator 931 Arch St, Philadelphia 19107 | (215) 627-8284 |
| John J Miller Investigations 7428 Boyer St, Philadelphia 19119 | (215) 753-1541 |
| Klink & Co Inc 1735 Market St, Philadelphia 19103 | (215) 564-4245 |
| Lawrence J Dove Assoc 6860 New State Rd, Philadelphia 19135 | (215) 331-9220 |
| Leonard Sosnow Assoc Philadelphia 19103 | (215) 735-0390 |
| Mid Atlantic Detective Bureau 1914 South St, Philadelphia 19146 | (215) 336-9600 |
| Mingo Detective Agency 4946 Aspen St, Philadelphia 19139 | (215) 877-7783 |
| Monarch Group Inc Po Box 14325, Philadelphia 19115 | (215) 677-4466 |
| Philadelphia Bureau-Invstgtns 624 Crestview Rd, Philadelphia 19128 | (215) 508-5234 |
| Pnc Investigations 30 S 15th St # 701, Philadelphia 19102 | (215) 988-0966 |
| Richard Strohm Investigation 2509 S Broad St, Philadelphia 19148 | (215) 468-9969 |
| Royal Carpet Cleaning & Jntrl 5200 Glenloch St, Philadelphia 19124 | (215) 533-8553 |
| Russell Kolins Assoc 1515 Locust St # 10, Philadelphia 19102 | (215) 732-7877 |
| Stephen J Bongard Svc Inc Philadelphia 19127 | (215) 930-0200 |
| Talone & Assoc 423 S 15th St, Philadelphia 19146 | (215) 546-6080 |
| Thrift Associates 3600 Sheaff Ln, Philadelphia 19145 | (215) 389-3200 |