Directories of private investigators and investigative services.
Directory of detectives and investigation agencies organised by region.
Find a private investigator or related service, by specialty and location.
Investigative service providers, organized by specialty.
National Association of Investigative Specialists
Membership directory, searchable by location and specialization.
National Network of Private Investigators
A directory of private investigators in the United States searchable by ZIP Code, city and/or state.
International directory of investigators, organized geographically.
Directory of private investigators with resources for this profession.
Professional Private Investigator Directory
Directory of private investigators from the United States, Canada, United Kingdom, Australia, and New Zealand.
Directory of UK investigators categorized by county.
Last update:October 18, 2016 at 7:15:16 UTC