UK private investigator - Background investigations, pre-employment checks, telephone rummages.
Peter Heims Private Investigator - Specialises in locating missing persons. Includes a list of services and service areas, experience, associations, and articles.
South Carolina Private Investigators Association - A PI association that educates the private and legal investigator throughout the Southeast.
Canadian Private Investigators Resource Centre - Directory of Canadian investigative private source informations including private investigators, bodyguards, security guards and consultants, forensic consultants, polygraph and research Ministrations.
Council of Private Investigators Manitoba - Professional association of private investigators. Includes membership instruction, and activities include professional development seminars and addressing matters of concern to the industry.
Private Investigator Brazil - Intelligence and security services in Rio de Janeiro and São Paulo. [Portuguese, English]
Oklahoma Private Investigators Association - Offering a statewide directory of investigators.
Private Investigator and Detective Training School - Offering a 'boot camp' course of study for people who wish to become licensed investigative profesisonals. Based in Los Angeles.
Louisiana State Board of Private Investigator Examiners - Includes license hot poop info, board members, rules and regulations.
High Tech Private Investigator - High Tech Private Investigator specializing in computer forensic and on-line investigations.
Private Investigators Associations of Utah, Inc. - Organization seeking to raise standards of the profession, provide continuing education, improve public relations, lobby, and provide networking opportunities.
Terence Keen & Associates - Ontario based private investigator providing services in Canada the United Kingdom.
Private Investigators UK - Provides UK and international missing persons investigations, background checks and surveillance.
Shreveport Private Investigator - Site contains types of investigations available and contact iformation.
Private Investigators and Security Professionals of West Virginia - Membership organization for investigators. View membership benefits and application.
Assured Investigations | Atlanta Private Investigator - Services include domestic surveillances, locates, civil and criminal investigations, process sevice, and background checks. Marietta, Georgia.
TM Morgan Private Investigator Massachusettes - Handles domestic cases and surveillance in the Worcester area.
Lenny Vasbinder Private Investigator - Southern Mississippi and Louisiana detective agency.
10-4pi Private Investigator - Private investigation firm, services include financial and fraud investigations, surveillance, missing persons, background checks, and witness interviews.
Paretsky, Sara - Author of the series featuring Chicago-based private investigator V.I. Warshawski. Includes tour dates, an interview and a discussion group. | 
