About Us

Phase Four Investigations is a leader in the field of Michigan private investigations, surveillance, and evidence gathering. We are fully bonded, licensed and insured. Our combined experience of over 35 years is the key to achieving the results you need and expect. We use ongoing training and skill specialization to ensure we provide exactly the right team for your case. We are relentless in the pursuit of the facts.

We know you have options when selecting a private investigator or security professional. There are hundreds of agencies from which to choose, but there are many reasons to choose Phase Four.


• We are Credentialed or Board Certified in many areas.

• We are the instructors and mentors of many current and future investigative and security professionals.

• When traditional methods don’t work, we get creative and think outside the box.

• We won’t do anything that will jeopardize your good name, or our reputation.

• We will keep you informed of new developments and the status of your case.

• We are committed to success. We will not take any assignment that is beyond our areas of expertise.

• There will be no “surprise” invoices or “miscellaneous” add on items. All time and costs are properly documented.


We are hands-on with our case management. We don’t merely debrief the investigator or simply read a report. We evaluate the case progress on an on-going basis to keep the case focused on factual results to maximize the value of your budget dollar. We continue to review investigative procedure and remain up-to-date on developing technology, criminal, behavior, methods, and investigative techniques.

At PFI our clients are real people.  We take the time to listen to your story in order to develop a legal, realistic plan of action.  After gaining an understanding of what you need or are looking for, our PFI investigators will evaluate whether or not you can benefit from our services.  We will not waste your time or money and will give you the information you need to take the next step.

Integrity, honesty, commitment, quality and responsiveness are the essential ingredients in all that we do. We offer reliable, cost-effective services at competitive prices, with worldwide capabilities.

If this is what you are looking for in a professional security and investigative agency, call us today. A discussion of your situation will not obligate you and it will cost you nothing.