
Company overview
ACM Investigations LLC is a privately owned company that was founded by Alexandre C. Matti in the beautiful Sioux Falls, South Dakota back in September 2018.
Our goal is to provide high-end quality investigation, and surveillance services to the residents as well as the businesses of South Dakota, Wyoming, and Idaho.
Our Firm specializes in Workers’ Comp Fraud Surveillance, Covert Surveillance, Infidelity Surveillance and we also offer a vast range of online services to fulfill any of your investigative needs.
ACM Investigations LLC is a Lifetime Business Partner of the PI/Alliance Network (International Group of Private Investigators.)
Contact us TODAY to get a FREE Consultation.
What our customers say about us
After dating a girl online for over 4 months, and having some plans to meet (I live in an other state), she was starting to ask for more and more money. I contacted acm investigations to verify her identity, and after a few days, got my answer. I was getting scammed. I’m glad I used them before wasting more money on her. Very friendly and professional investigator.

I used them last month. They got the job done. Fair prices, professional and friendly.

Good Investigators. We used them to do a Business Background Check on a partner and we got the results in less than 72 hours. We will definitely work with them again in the future.

Sadly I had to use this service last month. They were such great investigators and they found out the information I was searching for. Highly recommend. Very easy to communicate with.

Very professional investigators. Got scammed by a Craigslist seller couple of months ago and they were able to locate him for me. Great Investigators! And they got me the info in a couple of days! Thanks!
