Private Investigator · North Shore · Licensed Illinois PI
Supreme Investigations is a licensed Illinois private detective agency serving Winnetka, Kenilworth, Glencoe, Highland Park, Lake Forest, Wilmette, Northbrook and Glenview. Process serving, discreet surveillance, background checks and asset searches are available for attorneys, businesses and families.
Authority that matters in court: Supreme Investigations is licensed by the Illinois Department of Financial & Professional Regulation (IDFPR) under 225 ILCS 447 (Agency #117.001922, Detective #115.002750), and every service is performed and proof of service filed under 735 ILCS 5/2-202.
North Shore matters usually call for two things: getting it done, and keeping it quiet. We handle process serving, surveillance, background checks, asset searches and locates for law firms and residents from Wilmette to Lake Forest, with one licensed agency responsible for the work from start to finish.
Gated drives, doormen, long commutes into the city and frequent travel all get in the way. We plan each serve around the person's routine instead of knocking at the same time every day, and every serve comes with a detailed affidavit and time-stamped photos ready to file in Cook County or Lake County.
Standard service includes up to three attempts at a confirmed address within the Chicago metro area, photo documentation of each attempt, and a proof of service or non-service affidavit formatted for Illinois court filing. It is a flat rate with no add-ons.
This tier is for subjects who know they are being served and are actively evading contact. It includes a six-hour dedicated field window for accessing rear stairwells, conducting covert surveillance, canvassing neighbors, and applying 15 years of investigative experience to intercept the subject the moment they emerge. Attempts are photo-documented, and a written report and affidavit of service are included.
When the subject's address is unknown or unconfirmed, we conduct a skip trace first — identifying and verifying the current address through lawful database research and field verification before any service attempt is made. This eliminates wasted attempts at outdated addresses.
When a subject is actively avoiding service, we combine covert surveillance with active service attempts — positioning the process server to intercept the subject at the moment of emergence rather than waiting at a door that will never open.
Some matters need more than a knock on the door. We work quietly and document everything so it holds up in court.
We cover the whole North Shore and file affidavits with the Cook County courthouse in Skokie and the Lake County courthouse in Waukegan. Se habla español.
If you are represented by counsel, your attorney may contact us directly regarding scope, scheduling, volume pricing, and documentation requirements.
Supreme Investigations is a licensed Illinois process server and private detective agency serving Chicago, Cook County, and all of Chicagoland. Every assignment is handled by a licensed Chicago investigator — never outsourced, always confidential. Call today for your free consultation.
Free Confidential Consultation Call Now: (224) 366-9505