By the Law Office of Robert P. Jarvis | Mesa, Arizona Criminal Defense
Most people who have never been arrested have a vague, television-shaped idea of what a criminal defense attorney does. They show up in court. They object to things. They give closing arguments. Maybe they get their client off on a technicality.
That picture is not wrong — it just captures about ten percent of the job.
The reality of what a skilled criminal defense attorney does for a client in Mesa and throughout Maricopa County starts long before any courtroom appearance and extends well beyond the verdict. For most clients, the most important work happens in the weeks and months before trial — in the investigation, the motions, the negotiations, and the strategic decisions that determine whether a case gets resolved favorably or goes sideways.
Here is an honest account of what you are actually getting when you hire a criminal defense attorney in Arizona.
1. They Protect You From Yourself — Immediately
The single most valuable thing a criminal defense attorney does happens in the first hours after an arrest — and most people never take advantage of it because they don’t call soon enough.
When you are arrested, you are at your most vulnerable. You are frightened. You may be in shock. Law enforcement officers are trained in interrogation techniques specifically designed to elicit statements from people who believe they can talk their way out of a situation. The vast majority of people who speak to police without an attorney present make their situation worse, not better — even when they are completely innocent.
Your Fifth Amendment right to remain silent and your Sixth Amendment right to counsel exist precisely because the founders understood this dynamic. A criminal defense attorney enforces those rights the moment they are retained.
The instruction is simple and universally applicable regardless of the facts: do not speak to law enforcement, prosecutors, investigators, or anyone connected to your case without your attorney present. A defense attorney makes sure that instructions are followed and that nothing said in a moment of panic becomes the cornerstone of the prosecution’s case against you.
2. They Investigate the Case — Independently
Law enforcement conducts its own investigation. It is not neutral. Its purpose is to build a prosecution case. A defense attorney conducts a parallel, independent investigation with the opposite purpose: to find every fact, witness, and piece of evidence that helps you.
In practice, this means:
Reviewing the police report for inconsistencies. Officers write reports after the fact, sometimes hours or days after the incident. Reports contain errors, omissions, and characterizations that do not always match what body camera or dash camera footage actually shows. An attorney reads every word, looking for gaps and contradictions.
Requesting and reviewing all discovery. Arizona law requires prosecutors to turn over their evidence — witness statements, lab results, video footage, photographs, expert reports. Defense attorneys review all of it carefully, looking not just for what the prosecution plans to use but for what exculpatory evidence may be buried in the same files.
Interviewing witnesses independently. Witnesses who spoke to police during the investigation may have said things they didn’t mean to say, may have been asked leading questions, or may have additional information they didn’t share with law enforcement. Defense attorneys or their investigators contact and interview witnesses to get the full picture.
Retaining expert witnesses. Depending on the charges, a defense attorney may retain independent experts — forensic analysts, toxicologists, accident reconstructionists, mental health professionals — to review the prosecution’s evidence and provide alternative interpretations. An independent toxicologist reviewing blood test procedures has changed the outcome of many Arizona DUI cases.
Visiting the scene. For certain cases — assault, DUI accidents, burglary, trespass — visiting the physical location matters. Lighting conditions, sight lines, distances, and environmental factors that look one way in a report may look very different in person.
3. They Identify Constitutional Violations — and Use Them
This is the so-called “technicality” that people dismiss — and it is anything but.
The Fourth Amendment protects you from unreasonable searches and seizures. The Fifth Amendment protects you from self-incrimination. The Sixth Amendment guarantees your right to counsel. These are not loopholes. They are the foundational rules governing how evidence can legally be gathered and used against you.
When law enforcement violates those rules — by stopping your car without reasonable suspicion, by searching your home without a valid warrant, by continuing to question you after you invoked your right to remain silent — the evidence obtained through that violation can be suppressed. Suppressed evidence cannot be used against you at trial.
In practice, successful suppression motions have:
- Eliminated a defendant’s BAC result from a DUI prosecution, leading to dismissal
- Removed drug evidence found during an unlawful vehicle search, collapsing a felony possession case
- Excluded a confession obtained after a defendant clearly invoked their right to counsel, neutralizing the prosecution’s strongest evidence
A defense attorney cannot create constitutional violations that don’t exist. But they examine every step of the investigation and every piece of evidence to identify the ones that do — and then file the motions to act on them before trial.
4. They Navigate the Court Process on Your Behalf
The Arizona criminal court system involves a specific sequence of proceedings — arraignment, initial appearance, preliminary hearing, pretrial conferences, motions hearings, and eventually trial or a change of plea. Each stage has deadlines, filing requirements, and strategic considerations that a non-attorney navigating the system alone will almost certainly mishandle.
A defense attorney:
- Appears at hearings on your behalf when your presence is not required, preserving your time and employment
- Files motions within critical deadlines — a motion to suppress filed late is a motion not heard
- Requests continuances strategically when more time serves your defense
- Engages with the prosecution in pretrial conferences to explore resolution options
- Communicates with the court professionally and persuasively in ways that preserve your credibility with the judge who will eventually handle your case
For many clients in Mesa, the practical reality of navigating the Maricopa County Superior Court or Mesa City Court without representation is simply not a viable option. The paperwork alone is daunting. The procedural rules are unforgiving. And a mistake at any stage can permanently foreclose options that were available a week earlier.
5. They Negotiate With Prosecutors
A significant percentage of criminal cases — in Arizona and nationally — resolve through negotiated plea agreements rather than trial. This is not a failure of the system. It is the system working as intended in cases where the evidence is substantial, where the proposed resolution is genuinely fair, and where the client’s interests are best served by certainty over risk.
What matters enormously is who is doing the negotiating and from what position of strength.
An experienced Mesa defense attorney who has tried cases in Maricopa County, who is known to prosecutors as someone who will take cases to trial when necessary, and who has identified the genuine weaknesses in the prosecution’s case negotiates from a position of credibility. Prosecutors know they will have to work for a conviction. That knowledge produces better offers.
An unrepresented defendant — or one represented by an attorney who is clearly not prepared to try the case — gets the worst offer available. Prosecutors are professionals. They assess risk the same way defense attorneys do, and they price their offers accordingly.
A skilled defense attorney negotiates not just the charge but the sentence recommendation, the terms of probation, the conditions attached to a plea, and in many cases whether collateral consequences like domestic violence designations or weapons prohibitions attach. The difference between a well-negotiated and a poorly-negotiated plea can be measured in years of your life.
6. They Prepare and Try Your Case if Necessary
When a case goes to trial, the gap between represented and unrepresented defendants — or between well-prepared and underprepared attorneys — becomes starkest.
Trial preparation involves:
Developing the theory of the case. Not just “I didn’t do it” but a coherent, evidence-supported narrative that explains what actually happened and why the prosecution’s theory is wrong or unprovable. Jurors need a story. A defense attorney builds one.
Preparing cross-examination of prosecution witnesses. Every witness the prosecution calls — the arresting officer, the forensic expert, the eyewitness — will be cross-examined. Effective cross-examination requires thorough preparation, knowledge of the witness’s prior statements and potential biases, and the ability to conduct disciplined, focused questioning under pressure.
Preparing direct examination of defense witnesses. When the defense presents its own witnesses, those witnesses need to be thoroughly prepared to give clear, credible testimony. An unprepared witness, no matter how truthful, can damage a defense more than help it.
Crafting and arguing jury instructions. At the end of trial, the judge instructs the jury on the law they are to apply. Defense attorneys argue for instructions that accurately reflect the law and that frame the legal standards in ways favorable to the defense.
Delivering opening and closing arguments. These are the frames around everything the jury hears. A powerful opening statement sets the jury’s expectations and gives them a lens through which to evaluate the evidence. A compelling closing argument ties everything together and makes the case for reasonable doubt.
This is a skill-intensive, preparation-intensive process. The quality of the attorney trying the case matters enormously to the outcome.
7. They Think About Your Life Beyond the Verdict
A good criminal defense attorney in Arizona is not just thinking about winning the case in the narrow sense. They are thinking about what a particular outcome means for the rest of your life — your job, your family, your professional license, your immigration status, your right to own a firearm, your ability to rent an apartment.
These collateral consequences often matter as much as the sentence itself. A felony conviction that results in probation rather than prison may still cost someone their nursing license, their contractor’s license, their position with a government employer, or their ability to remain in the United States.
An attorney who understands the collateral consequences landscape for your specific situation — your profession, your immigration status, your prior history — will fight for resolutions that minimize damage to the whole of your life, not just the immediate criminal penalty.
8. They Are Your Advocate When the System Is Not
The criminal justice system is not designed to help you. Police, prosecutors, and judges are professionals doing their jobs — but their job is not to protect your interests. Their job is to enforce the law and process cases.
Your defense attorney is the one person in the system whose entire job is to stand between you and the state’s power to punish you — to hold the prosecution to its burden, to enforce your constitutional rights, to ensure you are treated as innocent until proven guilty, and to fight for the best outcome available to you given the facts of your case.
That role is not a technicality. It is the cornerstone of a fair criminal justice system — and in Mesa and throughout Maricopa County, it makes a measurable difference in outcomes for the people who take it seriously.
Facing Criminal Charges in Mesa? Let’s Talk.
The Law Office of Robert P. Jarvis represents people across Mesa, Chandler, Gilbert, Tempe, and the East Valley who are facing criminal charges at every level — from misdemeanors to serious felonies. We do the full job: investigation, motions, negotiation, and trial when necessary.
If you or someone you care about has been arrested or is under investigation in Maricopa County, the time to get an attorney involved is now — not after the arraignment, not after the plea deadline passes, not after you’ve already spoken to detectives.
Call today for a free, confidential consultation: [INSERT PHONE NUMBER]
You deserve to know what your options actually are. That conversation starts here.
The Law Office of Robert P. Jarvis serves clients in Mesa, Chandler, Gilbert, Tempe, Scottsdale, and throughout Maricopa County. This article is for general informational purposes only and does not constitute legal advice. Contact our office for guidance specific to your situation.
Our Practice Areas
(480) 632-1200
