Licensed Complex Investigations PI · Chicago & Chicagoland · Illinois PI Agency #117.001922
Complex Investigations in Chicago
Supreme Investigations is a licensed Chicago private investigator for complex, multi-location, and high-stakes cases. When timing, discretion, and execution are critical — non-compete enforcement, internal theft, multi-address surveillance, due diligence on a prospective partner, evasive subjects — we handle every phase directly. With 15 years in the field, we cover Cook County and DuPage County, deliver court-ready documentation, and never subcontract.
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.
A complex investigation in Chicago isn't just a longer surveillance session — it's a different discipline. These cases require coordinated operations across multiple addresses, tactical planning tied to a subject's behavior pattern, real-time adaptation when the scene changes, and documentation that survives scrutiny from opposing counsel, HR panels, insurance carriers, or a Cook County judge. Supreme Investigations handles the cases most firms decline or subcontract. Every phase — intake, planning, deployment, documentation, and delivery — is conducted directly by a licensed Illinois PI with 15 years of field experience. We serve Chicago, Cook County, DuPage County, and all of Chicagoland. Attorneys and businesses that hire a complex investigations PI in Chicago need coordinated documentation they can use in Cook County litigation and corporate proceedings.
Many investigations combine several disciplines: Surveillance Investigator Chicago services document behavior, Skip Tracing Chicago locates individuals, Background Check Chicago establishes relationships and financial indicators, and Process Server Chicago completes service once an address is verified. Handling these phases together ensures continuity, accuracy, and documentation structured for legal proceedings.
What We Handle
Time-Sensitive & High-Priority
Same-day and short-notice assignments are accepted, subject to availability. Court deadlines, TRO hearings, expiring service windows, imminent depositions, and urgent documentation requests receive immediate deployment and priority scheduling. Phone is the fastest path.
Multi-Location Operations
We coordinate surveillance across multiple addresses, jurisdictions, or shifts, such as a primary residence, a suspected secondary address, a workplace, and a regular meeting spot. Subjects who move between locations, travel cases, and simultaneous-coverage assignments are planned and executed as one operation.
Corporate & Internal Investigations
We investigate internal theft, embezzlement, employee misconduct, intellectual property concerns, non-compete and non-solicitation enforcement, and vendor fraud for Cook County businesses. Our documentation protects investigation integrity while producing evidence suitable for HR action, termination defense, or breach-of-contract litigation.
Credibility, Lifestyle & Due Diligence
We conduct pre-transaction due diligence on prospective business partners, investors, or acquisition targets, as well as lifestyle documentation and credibility research for attorneys, high-net-worth clients, and estate matters. Database research and selective surveillance combine to produce a complete factual picture before capital is committed.
Locate & Skip Tracing — Difficult Subjects
We provide enhanced locate and skip-tracing services for subjects who have intentionally concealed their whereabouts, relocated out of Illinois, used aliases, or have a history of evading service. We combine investigative-grade database research with active field verification before any service attempt.
Covert Documentation & Evidence Development
We provide pre-trial evidence development, covert surveillance, independent fact verification, and witness location for attorneys preparing Cook County litigation. Every evidentiary package is formatted for motions, depositions, and trial exhibits — court-ready without rework.
Documented Case Example
Multi-Session Surveillance Across Shifting Locations — Corporate Misconduct & Non-Compete Matter
A Cook County business retained Supreme Investigations to document the activity of a former employee suspected of operating a competing business using proprietary client information — in direct violation of a signed non-compete agreement. The subject had become evasive and was operating across multiple Chicago-area locations, making standard single-session surveillance insufficient.
We developed a coordinated surveillance plan covering the subject's known locations — a primary residence, a suspected business address, and a co-working facility in the Loop. Operations were deployed across multiple sessions timed around the subject's known patterns, with mobile units tracking movement between locations and secondary camera systems documenting arrivals and departures at fixed addresses.
The resulting documentation captured the subject conducting business activity at a competitor location, meeting with clients the retaining business recognized from their own client list, and transporting materials from the suspected business address. The complete evidentiary package was delivered to the client's attorney in a format ready for use in breach-of-contract proceedings — and used successfully to secure a preliminary injunction in Cook County.
Complex Case? Call Directly.
Multi-location operations, corporate matters, and time-sensitive assignments are best discussed by phone. Call now and speak directly with the licensed investigator who will handle your case — no intake coordinator, no subcontracting.
From the Loop and downtown Chicago to Cook County suburbs and the wider Chicagoland region, we provide responsive, professional complex investigation service when it matters most.
Frequently Asked Questions
Why Supreme Investigations
- Licensed Illinois private detective agency — IDFPR Agency #117.001922 & Detective #115.002750
- Every case handled directly by Robin Valenzuela — never outsourced or subcontracted
- 15 years of field experience across surveillance, covert operations, and corporate matters
- Multi-camera and multi-investigator operations for complex assignments
- Court-ready documentation built for attorney review and Cook County proceedings
- Direct communication from intake through final report delivery
- Available seven days a week — time-sensitive matters handled promptly
- Se habla español
Related Services
Supreme Investigations is a licensed Illinois private detective agency providing court-ready investigative services across Chicago and Chicagoland.
If you are represented by counsel, your attorney may contact us directly regarding scope, documentation requirements, deliverables, and testimony availability. Supreme Investigations PLLC is a licensed Illinois private detective agency based in Chicago, Illinois.