
Can’t find the answers you’re looking for? Contact a private investigator in your area who conducts investigations to get you the information you need. At Advanced Investigative Services, Inc, we provide a variety of investigative services to those in Douglas County, IL, and the surrounding areas.
Established in 1996 and operated by a former state police captain, we employ experts from local, state, and federal agencies who offer over 100 years of combined investigative experience.
Our investigative services include:
We utilize local, national, and global databases to ensure we are using current and accurate information when conducting investigations. From employee background checks to pre-trial investigations, we are the professionals to call when you need dependable investigative services.
Those in the Douglas County, IL, area know to contact our private investigators for professional and thorough investigations. We offer a variety of personal, business, and professional investigative services to clients throughout the local community.
Our extensive list of personal investigations includes pre-marital background checks, civil suit investigations, divorce investigations, missing-person searches, and more. Business and professional investigations range from pre-employment screenings and background checks to workers’ compensation claims, pre-trial investigations, process services, and additional investigative support.
We proudly provide investigative services to those in Douglas County, IL, and the surrounding communities. Ask how our trained staff can help set up a surveillance system at your home or business that helps protect your property while offering 24/7 internet accessibility.
At Advanced Investigative Services, Inc, our goal is to provide confidential and reliable investigations at competitive rates. Contact our office for a free, no-obligation consultation regarding your case, or visit our website for more information.


Are you looking for a private investigator on behalf of your business or to conduct a personal investigation? Advanced Investigative Services, Inc has been a trusted provider of investigative services since 1996.
We have a team of professional and experienced investigators with the right skill set to handle many types of investigations. Whether you are searching for a missing person, want to run background checks on potential employees, or need video surveillance, you can count on Advanced Investigative Services, Inc.