Private Investigators Northern Illinois
Welcome to Advocate Investigators Ltd.


Seasoned professionals. Isn’t that what you really need when using an investigative services company? No matter what your assignment, you want the most capable, veteran assistance available. Advocate Investigators are seasoned professionals. Your case has complicated legal issues. Critical evidence is needed, and you can’t risk witness interrogation, scene investigation and case preparation to inexperienced personnel.

Our investigators have decades of experience in civil and criminal investigations as well as civil and criminal litigation. The president of Advocate Investigators, Ltd. is a licensed attorney with more than 26 years of litigation experience, including scores of civil and criminal jury trials. Who can better to assist you as you prepare for trial than an investigator with trial experience?

And we have the modern techniques down pat: You’ll get hard copy, plus state-of-theart digital audio, pictures and movies for your trial preparation. Advocate Investigators, Ltd. is an Illinois licensed private detective agency 117-001182.

We are a proud member of the National Association of Legal Investigators (NALI) and the National Council of Investigation and Security Services (NCISS).