Columbia Private Detective Agency, Inc.
- Investigative agency offering a full range of services in Columbia.
- http://www.columbiadetective.com/

KT Consultants, Inc.
- A full service private investigation agency serving South and North Carolina.
- http://www.ktconsultantsinc.com/

Bernard Investigations
- Investigative services to corporate, legal and domestic clients in South and North Carolina.
- http://www.bernardinvestigations.com

Blazer Investigative and Security Consultants, LLC
- Specializes in insurance fraud as well as divorce and child custody cases. Includes an overview of services, list of professional memberships, and contact details.
- http://www.blazerinvestigative.com/

Comen Detective Agency
- Headquartered in Charleston with offices in New York; find out about services including divorce and missing person cases, read press releases, or find contact information.
- http://www.comen-pi.com/