CRW
O’Fallon · St. Clair County

Criminal Defense Lawyer O’Fallon IL

O’Fallon sits between Belleville and Scott Air Force Base, and its criminal cases are filed in St. Clair County and heard at the Belleville courthouse. The firm regularly represents O’Fallon residents, military personnel, and visitors charged in the area.

O’Fallon Police, Shiloh Police, and Illinois State Police generate most of the local arrests, often arising from traffic stops on Highway 50, I-64, and Green Mount Road. Many cases involve active-duty Scott AFB personnel, where a state-court conviction can trigger command action and threaten a security clearance independent of the criminal sentence.

The firm coordinates the civilian defense with the client’s military situation when relevant — timing pleas around deployments, structuring resolutions to minimize command-notification exposure, and ensuring the record supports later expungement or sealing where available.

Full Criminal Defense practice overview
Practice 01

Criminal Defensefrom arraignment to verdict.

Full practice overview

Comprehensive felony and misdemeanor defense, trial advocacy, and pre-charge investigation throughout Southern Illinois.

A criminal charge — even a misdemeanor — is a fight for your record, your livelihood, and in many cases your freedom. Cheryl R. Whitley has spent her career standing between the State of Illinois and the people it accuses, building defenses that begin the moment a client calls and continue through every motion, hearing, and verdict.

Every case starts with an independent investigation. We do not accept the police narrative at face value. Body-cam footage, dispatch logs, witness statements, forensic reports, and chain-of-custody records are obtained, reviewed, and pressure-tested for inconsistencies. Where the State cuts corners — illegal searches, suggestive identifications, coerced statements, lab errors — we file the motions necessary to suppress that evidence and, in many cases, end the case before trial.

Serving O’Fallon

Where we appear.

Criminal Defense cases from O’Fallon are typically heard at the St. Clair County Courthouse. The firm appears in this courthouse regularly and is familiar with its judges, prosecutors, and procedures.

St. Clair County Courthouse
10 Public Square, Belleville, IL 62220
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Why Clients Trust Cheryl

Why choose us.

Local Courtroom Experience

Decades of appearances in St. Clair County courthouses. Familiar with the judges, prosecutors, and local procedures that shape your case.

Direct Attorney Attention

Your case is handled by Cheryl Whitley personally — not handed off to associates or paralegals. Direct communication from intake to resolution.

Trial-Ready Defense

Every case is prepared as if it will go to trial. That preparation drives better plea negotiations and stronger outcomes at every stage.

Responsive & Available

Emergencies don't wait for business hours. The firm is reachable when you need guidance most — including evenings and weekends.

O’Fallon FAQs

Local questions.

Q01Where will my O’Fallon case be heard?
At the St. Clair County Courthouse in Belleville. The O’Fallon municipal court handles only ordinance matters; everything else proceeds in Belleville.
Q02I’m active duty at Scott AFB — will my command find out about my charge?
Generally yes — most arrests are reported through law enforcement channels. The firm structures the defense to minimize collateral consequences and coordinates with military counsel where appropriate.
Q03Does court supervision keep a conviction off my record?
For eligible misdemeanors, yes. Successful completion of supervision results in dismissal and avoids a conviction — important for security clearances, federal employment, and licensing.
Q04Can the firm handle expungement or sealing later?
Yes. Where a case ends in dismissal, acquittal, or qualifying supervision, the firm files the petition to expunge or seal once the waiting period runs.
Recent Outcomes

Criminal Defense results.

Criminal Defense
Domestic dispute charges
All charges dropped

Aggressive pretrial advocacy and constant client communication led to a full dismissal before trial.

Criminal Defense
Multiple felony charges
Not guilty — 0 felonies

Client faced multiple stacked charges. Trial strategy resulted in a complete not guilty verdict with zero felony convictions.

Criminal Defense
Criminal trial
Not guilty verdict

Thorough preparation and courtroom execution earned a not guilty verdict at trial.

Prior results do not guarantee a similar outcome.

Request a Consultation

Charged in O’Fallon? Get answers.

Confidential consultation for criminal defense matters across St. Clair County. Share a few details and Cheryl will respond personally — typically within one business day.

All communications are confidential and protected.
For urgent matters, call (618) 520-3307.

Submitting this form does not create an attorney–client relationship. Do not include confidential details.