Search for '"Private Investigator"' yielded 4 results in all chapters:

1:
§17A-2A-7. Permitted disclosures.
2:
§30-18-1. Definitions.
3:
§30-18-2. Eligibility requirements for license to conduct the private investigation business.
4:
§30-18-3. Application requirements for a license to conduct the private investigation business.