Licensed Private Detective Agency · Chicago, Illinois · Serving Illinois Counsel
Investigative Support for Illinois Attorneys
Court deadlines do not wait. When your case needs field documentation that holds up, you need a licensed Illinois private detective who answers the phone, works the file personally, and delivers reports your associate can file without reformatting.
Supreme Investigations PLLC is a state-licensed Illinois private detective agency serving family law, civil litigation, insurance defense, personal injury, and probate counsel across Chicago and Chicagoland. Every engagement is handled personally by the licensed investigator — never subcontracted. Scope is confirmed in writing, reports are formatted for Rule 901, and the investigator is available for deposition and trial testimony.
Licensed by the State of Illinois: Supreme Investigations is licensed by IDFPR under 225 ILCS 447 (Agency #117.001922, Detective #115.002750) and is fully insured. Certificates of insurance are available to firms on request.
How We Work With Your Firm
You speak directly with Robin Valenzuela. A conflict check is run before any case detail is discussed, and the intake is treated as work-product material from the first call. NDAs are available on request.
Objectives, methodology, legal constraints, retainer, and billing terms are confirmed in a written engagement letter before any fieldwork begins. No fieldwork outpaces the scope. IOLTA-compliant invoicing is available.
The licensed investigator executes all fieldwork personally. Status updates come by phone, text, or encrypted email, coordinated through your designated firm contact. Paralegals and case managers can be designated after initial intake.
The final report and evidence package are delivered via your preferred secure method, and a pre-hearing review call is included. Testimony preparation and an exhibit walkthrough are available before any contested proceeding.
Practice Areas We Support
We provide surveillance documentation for parenting-time disputes, cohabitation evidence under 750 ILCS 5/510, infidelity matters, and order-of-protection support under 750 ILCS 60. Reports are framed around the Best Interest factors.
We locate fact witnesses, serve evasive defendants under 735 ILCS 5/2-202, verify assets and employment, and develop on-the-ground evidence for motion practice and discovery.
We conduct workers' compensation and bodily injury surveillance under 820 ILCS 305, delivering timestamped video, written activity logs, and reporting formatted for IWCC submission and SIU review.
We provide scene documentation, neighborhood canvassing, witness identification and recorded statements, and background development on adverse parties for plaintiff and defense work.
We handle missing-heir locates, financial-exploitation documentation, and undue-influence investigations for contested estates and guardianship proceedings under 755 ILCS 5.
We conduct independent witness interviews, alibi development, scene reconstruction support, and background investigation on state witnesses under counsel's direction and work-product protection.
Investigative Services for Counsel
Attorney Field Courier Services
What You Receive — Court-Ready Deliverables
Why Illinois Counsel Engage Supreme Investigations
Attorney Engagement Pricing
View Full Pricing & Retainer Terms →
Attorney FAQ
Are you insured?
Yes. Supreme Investigations PLLC carries general liability and professional liability coverage and is licensed under 225 ILCS 447 — Agency #117.001922 and Detective #115.002750. Certificates of insurance are available to firms on request, including additional-insured endorsements when required by your firm's vendor agreement.
Do you provide testimony at hearings or trial?
Yes. Robin Valenzuela is available for deposition and trial testimony as a fact witness regarding observations, methodology, and chain of custody. Reports are drafted with foundational testimony in mind and formatted for authentication under Illinois Rule of Evidence 901. Pre-testimony case-preparation calls are included at no additional charge.
How do you handle attorney-client privilege and work product?
All engagements are scoped to support attorney work product and conducted under counsel's direction. Files are stored confidentially with restricted access, communications are limited to firm personnel you designate, and conflict checks are run before any case detail is discussed. NDAs are available on request.
What is the typical turnaround on attorney engagements?
Standard surveillance and locate assignments deploy within 24–48 hours of executed engagement. Court-deadline matters are prioritized and can frequently deploy same-day. Final reports are typically delivered within 3–5 business days of fieldwork completion, with rush turnaround available.
Do you bill on retainer or invoice?
Both. Standard practice is a written scope-and-fee agreement up front with a retainer applied to fieldwork hours. Trust-account arrangements and IOLTA-compliant invoicing are available. Billing is itemized for clean cost-shifting to your client when applicable.
Will you work outside Cook County?
Yes. We routinely work throughout DuPage, Lake, Will, Kane, and McHenry counties, and accept assignments anywhere in Illinois. Out-of-state work is considered case-by-case in coordination with appropriately licensed local counsel and investigators.
Can you coordinate with paralegals and case managers?
Yes. After the initial attorney intake, you may designate a paralegal, associate, or case manager as the firm's point of contact for status updates, scheduling, and document delivery. The investigator remains the licensee personally responsible for the file.
Open a Case File or Schedule a Privileged Consultation
Court deadlines do not wait. Reach the licensed investigator handling your file directly — by phone, encrypted email, or secure intake. We are available seven days a week throughout Cook County and Illinois.
Serving papers? Skip the call. Email the documents and the party's last known Illinois address to [email protected] and you’ll have an invoice and turnaround the same business day. To begin attempts immediately, pay the $225 standard service fee ($650 hard-to-serve) by Zelle to the same address — we start right away.
Prefer to scan? Open Zelle in your banking app and scan to pay Supreme Investigations PLLC — no typing needed.Supreme Investigations PLLC · Agency #117.001922 · Detective #115.002750 · Licensed by IDFPR under 225 ILCS 447 · Chicago, Illinois · Se habla español