Private Investigator Chicago

Best Reviewed Private Investigation Firm in Chicago, IL

Domestic, Corporate, & Litigation.

Best Private Investigation Firm in Chicago

Accredited Investigation Firm in Chicago

Private Investigation Firm Services

Attorney, Litigation & Legal Process Services

Corporate Investigation & Risk Management

Personal & Domestic Investigations Services

Chicago Based Investigators,
Serving Nationwide

For over 38 years, LRI has been building its reputation as one of the most effective private detective in Illinois and nationwide. Whether it’s a missing person, domestic case, corporate investigation, or process serving, our Chicago detectives have the skills and experience to get the job done.

In addition, by leveraging technology and our extensive network of resources, we are able to coordinate investigations internationally.

LRI serving nationwide

Investigators Toolbox

Investigators have an array of tools that give you the undeniable facts you need to solve your problem.

Asset searches, background checks, GPS tracking, and surveillance are just a few tools available to an investigation team. Each case is unique and there is no one-size fits all strategy.

As a reputable private investigation firm, we will work to find the most cost-effective solution to accomplish your goals.

GPS Tracking

Know when and where a person is going.

How to Hire Private Investigator

Our goal while you are here is to provide you with the information you need to make the best decision possible. Hiring a private investigator does not need to be a source of stress and anxiety.

When you are ready, give us a call for a confidential assessment.  After we understand your needs and are confident we can help you, we’ll explain exactly how we can help and the costs involved.

We are here and ready to help twenty-four hours a day.

Get answers to common questions:

  • How much does it cost for a private investigator?
  • How does a private investigator find people?
  • Is the information admissible in court?
  • What can a private investigator do that I can’t?

The Four Pillars of Our Investigative Services


We move quickly without compromising the quality and integrity of the investigation.


We only target opportunities that have high probability of producing results. This produces better outcomes and saves clients money.


We never forget that our work is connected to a human being. Understanding our clients needs is paramount.


We insist on transparency and openness. We only accept clients we feel we can help.

About Ryan Investigations – Private Investigator Chicago, IL

Private Investigator Chicago, Illinois, – LRI brings over 38 years of law enforcement and investigations experience to bear on one goal: discovering the truth for our clients, whether that be catching your cheating spouse, winning a custody battle or divorce, or busting a stealing employee. Before hiring a private investigation firm, see what our clients are saying.

A . This company explained the process thoroughly and gave me a set price. I was provided documentation on each step of the way. With a difficult case, this company got the job done. Professional, professional, professional.
Denise R. | 5/5 Review on
Most people will never need a process server, but if you do, I highly recommend Mr. Ryan. A true professional, he gave me same-day service and the best rates in the Chicagoland area.
Joe B. | 5/5 Review on Yelp

Privacy is Key To Private Investigation Services

We are widely recognized as not only the most effective and top private investigators in Illinois, but also the most discrete and confidential. Your privacy and protection is our number one concern. Why do we go to such great lengths to be the most confidential private investigators in Chicago? In addition to insuring your anonymity and safety, it is also critical to a successful investigation.

Uncommon Approach to Private Investigations

The best private detectives are available to solve your problem fast and accurately. Call to learn your options.