| Business | Phone |
| Clarke International Invstgtns 1608 N Cahuenga Blvd, Los Angeles 90028 | (323) 463-2588 |
| Joe Paolella & Assoc 4311 Wilshire Blvd # 314, Los Angeles 90010 | (213) 385-2188 |
| Litigation Advantage Invstgtv 3701 Wilshire Blvd # 1060, Los Angeles 90010 | (213) 388-2654 |
| Douglas Baldwin & Assoc 2640 Griffith Park Blvd, Los Angeles 90039 | (818) 952-4433 |
| Ingram Investigations 4343 W Sunset Blvd, Los Angeles 90029 | (323) 666-5775 |
| Star 1 Investigations Los Angeles 90044 | (323) 756-0125 |
| Frank Ellman Security & Inc Los Angeles 90041 | (323) 997-7240 |
| 4-Front Investigations Inc 1100 Wilshire Blvd, Los Angeles 90211 | (818) 638-7031 |