
When you or your company needs investigative services in Effingham County, Illinois, who can you trust to get the information you need? We want you to know that you can rely on Advanced Investigative Services, Inc for the fastest, most confidential investigative services available. Advanced Investigative Services, Inc was founded in 1996 by retired Illinois State Police Captain, William R. Barrett. Barrett’s goal was to create a company that could provide businesses and individuals with the most confidential and thorough investigations in the industry, and he has succeeded in doing just that. Our services cover:
Advanced Investigative Services, Inc employs only the most experienced private investigators with a wide variety of expertise in their fields, and we have investigators residing and working in multiple states in the region. Having agents in different locations gives us the ability to conduct investigations in a wide variety of locations and to begin these investigations immediately upon request. The wide range of investigative experience of our private investigators also enables us to conduct investigations. We can also offer specialty services that other investigative companies cannot, such as licensed pilots, serologists, and more.


Are you looking for a professional private investigator for a business or personal investigation? If so, Advanced Investigative Services, Inc has been the leader in investigative services in Effingham County, Illinois since 1996. We have a team of professional investigators with the right experience to handle any type of investigation. Whether you are in search of missing persons, want to run background checks on potential employees, or need video surveillance, we are the company to call.