Home Private Investigator, Detective, Police Officer & Legal Research Resources

Private Investigator, Detective, Police Officer & Legal Research Resources

Research Tools, Databases and Websites

eInvestigator.com is a resource website for private investigators, detectives, police officers, crime scene investigation experts, security specialists, legal professionals and those in related professions. Our website offers an extensive collection of helpful research tools, how-to articles and reviews. To get started, we recommend that you start with our Private Investigator Research Tools page.


This section includes articles and information related to law enforcement officials and the duties of police officers. You’ll find information related to how to become a police officer and start a career in the field, where to go for training and education, the equipment and vehicles used in the line of duty, and much more.

If you need to hire a private investigator, please visit our international directory of private eyes and agencies. There, you’ll find lists of local professionals who can help with a broad range of investigative needs. In our software and online services section, you’ll find a variety of useful investigative software apps, online services and computer programs that can be used for searching online databases, running background checks, uncovering hidden data and information, running your business and more. Plus, we have reviews on spy gear and hi-tech electronic equipment that can be used for electronic surveillance. If you need to sharpen your skills, check out our PI training and continuing education materials, product reviews and more. If you’re an aspiring private eye, find out how to become a licensed private investigator.


Computer software, mobile apps and online search services play a major role in the modern private eye’s business. Investigators use programs like case management to manage all of the information, data and materials related to a particular case. They use online services to conduct research, run background checks, search databases and pull reports and data to find missing persons and uncover the truth about people. And detectives make heavy use of specialized applications (or apps) on their mobile devices to search for information on the go. Visit our Software, Mobile Apps and Online Services section.


Spy gear and surveillance equipmentProfessional investigative work requires the use of hi-tech equipment and electronic gadgets to perform surveillance, capture video and photos of subjects, check for electronic bugs, and more. Experts use a variety of tools in their missions to capture the evidence needed to solve criminal and civil cases alike. Check out the articles in this section to learn more about the best tools and how to use them to help solve more cases. Visit the Spy Gear section.

Background Checks

Background investigations, employment and work history verification, and date checks are some of the most commonly requested services handled by private investigators. Learn how to use online database service providers like LexisNexis, public records providers like Intelius and specialized software to find the truth about people. Learn how to compile data and information from multiple sources into reports and dossiers for your clients. Learn more about Background Checks and the companies that provide such services.


TV Crime and Detective Shows on DVDMany people get their original inspiration to become a private eye from watching police crime dramas and detective investigation series on TV. Detectives like Columbo, Jim Rockford and Magnum P.I. made the profession look like an exciting and desirable career for anyone. And the more modern shows like Law & Order and NCIS inspired a new generation of crime scene investigation specialists to pursue a career in putting criminals behind bars using crime scene forensics. Check out our TV Crime Drama Series section for overviews of the most popular TV series, both old and new. All are available on DVD.


The United States government has a wide variety of resources that may be helpful to sleuths and gumshoes of all kinds. U.S. Intelligence Agencies such as the Central Intelligence Agency (CIA) and the National Security Agency (NSA) and investigative departments such as the Federal Bureau of Investigation (FBI) and even the Secret Service can be helpful resources for gumshoes who are searching for people, data and information. Visit our Government Research section to read helpful articles and learn more about how to leverage these helpful resources.


There are numerous books and reference manuals available on Amazon.com that provide detailed information on every aspect of investigative work. Private eyes should leverage the information in books to help expand their understanding and skills on a variety of specialty areas and to build a library of reference materials for future use. And if you’re inspired by detective crime stories, or simply enjoy a good fiction novel, there are a huge number of quick reads available. Check out our P.I. Training Books section for more info.


Be sure to check out our extensive Lists of Lists category. We’ve compiled an extensive collection of lists for those who are employed in professions related to the investigative industry. You’ll find lists such as a List of Social Networks (for social media checks), List of State Information, List of Search Engines for conducting research and more. We’ve also pulled together lists of interesting information like, Real Estate Facts, Server Error Codes, U.S. Presidents and more.

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