| Business | Phone |
| Al Villarreals Detective Agy 122 State St, Madison 53703 | (608) 268-2992 |
| Angel Private Eyes 10 E Doty St 800, Madison 53703 | (608) 221-9799 |
| Api 2805 E Washington Ave, Madison 53704 | (608) 243-8689 |
| Boldtronics Inc 2122 Luann Ln # 208, Madison 53713 | (608) 845-5119 |
| Crawford & Assoc 1525 Almo Ave, Madison 53704 | (608) 819-0733 |
| Uncharted Country Publishing 408 S Baldwin St, Madison 53703 | (608) 280-9730 |
| Rikki Glen & Assoc 131 W Wilson St 1200, Madison 53703 | (608) 294-1257 |
| Northern Reporting Svc Inc 6409 Odana Rd # A, Madison 53719 | (608) 271-8220 |
| Lyle Thomas Agency 1009 S Whitney Way, Madison 53711 | (608) 270-1575 |
| Marwood Investigative & Rsrch 2935 S Fish Hatchery Rd, Madison 53711 | (608) 298-0370 |