MSI Detective Services

MSI Detective Services specializes in discreet, professional, and confidential investigative services for clients located in the Chicagoland area.  MSI also handles many cases nationally and internationally as well. MSI maintains direct communication with you throughout the investigation so you never have to wait long for results. Headquartered in Chicago, MSI is a full-service private detective agency.  MSI conducts investigations for attorneys, businesses, insurance companies, and individuals. MSI experienced private detectives are here to help with all your investigative needs. MSI investigators are available for a free confidential consultation, Monday through Friday, 9am – 6pm. For all emergency services, MSI private investigators are available 24 hours a day, 365 days a year. Dial extension 911 after you reach our after-hours voice mail to leave an emergency message.  Our toll-free number is (888) 338-4545.