What Does a Criminal Defense Attorney Do?

Facing a criminal charge or even being investigated for one can be incredibly stressful and disruptive, especially for someone who has never dealt with the legal system before. The process often involves unfamiliar terminology, strict procedures, and decisions that can carry lifelong consequences.

A criminal defense attorney is a legal professional who represents individuals accused of crimes by protecting their rights and seeking the best resolution possible.

However, their role is not limited to appearing in court. In this article, we will discuss the various services and duties a criminal defense attorney performs for their clients.

Investigating the Criminal Case Against You

A criminal defense lawyer starts by examining how the case was built, not just what is being alleged. This means reviewing the criminal charges and offenses alongside the underlying evidence to understand what the government claims happened and how it intends to prove it. They will review such items as:

  • Police Reports: Official summaries prepared by law enforcement that outline the incident, observations, and actions taken during the investigation.
  • Witness Statements: Accounts from individuals who claim to have seen or heard relevant events, which may vary in accuracy or consistency.
  • Recorded Footage: Video or audio evidence, such as surveillance or body camera recordings, that may capture parts of the alleged incident.
  • Forensic Results: Scientific analyses, such as DNA testing or blood alcohol content (BAC) reports, used to connect physical evidence to people or events.

These are all part of this initial assessment, but they are treated as one version of events, not the final word.

From there, the focus shifts to testing that version of events. An attorney looks for gaps, inconsistencies, and assumptions that may not hold up under scrutiny. That includes questioning whether witnesses are reliable, whether identifications are accurate, and whether the timeline actually makes sense when the evidence is put together. In many cases, small inconsistencies or missing details can become significant once the case is examined closely.

Just as important is evaluating how the evidence was obtained. A defense attorney analyzes whether law enforcement followed proper procedures at each step of the investigation. This can include issues such as:

  • Whether a stop or detention was legally justified
  • Whether a search was conducted with a valid warrant or exception
  • Whether statements were obtained in compliance with Miranda requirements
  • Whether evidence was collected and handled properly

If there are problems in how evidence was gathered, those issues can directly affect whether it can be used in court.

An investigation is not limited to reviewing what already exists. A defense attorney may also develop additional information to better understand the case. The goal is to move beyond the initial accusation and build a complete, fact-based understanding of what actually happened.

Explaining Your Legal Options

Once the facts and evidence have been reviewed, a criminal defense attorney shifts focus to what can be done with the case. At this stage, the role is less about gathering information and more about helping the client understand the available paths forward and the risks tied to each one. Every case presents different options depending on the evidence, the charges, and the surrounding circumstances.

Part of this process involves breaking down how a case may realistically unfold. While outcomes vary, most cases move in one of several directions:

  • Dismissal: The charges are dropped, meaning the case does not move forward and no conviction results from the allegations.
  • Negotiated Resolution: The case is resolved through a plea deal between the defense and prosecution, often involving reduced charges or agreed-upon conditions.
  • Trial: The case is presented in court, where a judge or jury determines the outcome based on the evidence and testimony.

A defense lawyer explains what each path involves, what must happen for that outcome to occur, and how the client’s decisions may influence the result.

To make those decisions, clients need more than general information. They need case-specific guidance. A defense attorney typically helps evaluate:

  • What the prosecution would need to prove to secure a conviction
  • Whether the available evidence appears strong or vulnerable to challenge
  • What legal defenses may apply based on the facts
  • How a plea agreement compares to the risks of going to trial
  • What consequences the court may consider under different outcomes

This kind of analysis allows the client to weigh options in practical terms. Instead of guessing or reacting to pressure, they can make informed decisions based on how the case is likely to develop and what strategy best aligns with their situation.

Filing Motions to Protect the Truth

A criminal defense attorney uses motions to challenge how the case is being handled and what evidence the court is allowed to consider. These are formal requests asking a judge to decide specific legal issues before a case moves forward. While they happen outside of trial, motions can significantly shape what happens inside the courtroom.

Some motions focus on whether the case should proceed at all, while others target specific pieces of evidence or procedures. Rather than treating all motions the same, a defense attorney selects them based on the weaknesses in the case and the legal issues at play. Common examples include:

  • Motion to Suppress: Seeks to exclude evidence that was obtained in violation of constitutional rights, such as through an unlawful search, seizure, or interrogation.
  • Motion to Dismiss: Argues that the charges should be thrown out because they are not supported by sufficient facts or do not meet legal requirements.
  • Discovery Motion: Requests that the prosecution turn over evidence, reports, or other materials that are required to be shared with the defense.
  • Motion in Limine: Asks the court to limit or prevent certain evidence or testimony from being introduced at trial, often to avoid unfair prejudice.

These motions are not just technical filings. They directly affect what the prosecution is allowed to rely on and how the case is presented. By raising these issues early, a defense attorney can narrow the scope of the case, exclude unreliable evidence, and create a stronger position moving forward.

Negotiating With the Prosecutor for the Best Possible Resolution

A criminal defense attorney negotiates with the prosecutor to determine whether a case can be resolved without going to trial and, if so, under what terms. These discussions are a standard part of the process and often take place after the evidence has been reviewed and any major legal issues have been identified. The goal is to reach an agreement that reflects the strengths and weaknesses of the case.

Negotiation is driven by leverage. A defense attorney uses what has been uncovered during the investigation to push for a more favorable outcome, such as:

  • Evidence Weaknesses: Gaps, inconsistencies, or lack of proof tying the accused to the offense
  • Credibility Issues: Witnesses who are unreliable, inconsistent, or have motives to lie
  • Legal Challenges: Potential suppression issues or other constitutional violations
  • Mitigating Circumstances: Facts that provide context, such as lack of prior record or limited involvement
  • Practical Considerations: Trial risks, resource constraints, and the likelihood of conviction

At the same time, the prosecution considers its ability to prove the case, the seriousness of the allegations, and other factors that may influence how the case should be resolved.

Depending on the circumstances, a defense attorney may negotiate for outcomes such as:

  • Reduced Charges: Lowering the severity of the offense to limit potential penalties
  • Dismissal of Certain Counts: Removing some charges while resolving others
  • Diversion or Treatment Programs: Allowing the case to be resolved through completion of specific conditions rather than a conviction
  • Sentencing Agreements: Reaching an understanding about what penalty will be recommended to the court

These discussions are not automatic or one-sided. Each decision to accept or reject an offer involves weighing the risks of trial against the certainty of a negotiated result. A defense attorney helps the client understand those tradeoffs, but the final decision always belongs to the client.

Representing You at Trial

When a case goes to trial, the attorney’s role shifts to presenting and responding in real time as the evidence is introduced. The structure of the trial matters here. It begins with opening statements, where each side outlines how they believe the evidence should be understood, and ends with closing arguments, where those points are tied together after all testimony has been heard. A defense attorney uses these moments to frame the case early and then return to the most important issues at the end.

Between those stages, the focus is on how the prosecution’s case holds up under scrutiny. A defense attorney must manage several moving parts at once, including:

  • Cross-Examining Witnesses: Targeting inconsistencies, limited knowledge, or bias in testimony
  • Raising Objections: Preventing improper questions or evidence from being considered
  • Controlling Pace and Focus: Deciding when to press an issue and when to move on
  • Adapting Strategy: Adjusting approach based on how testimony unfolds in the moment

These decisions shape how the judge or jury processes the case as it proceeds. Rather than challenging every detail, the defense focuses on the points that have the greatest impact.

The defense must also decide whether presenting its own evidence will strengthen the case or create additional risk. In some situations, introducing witnesses or other evidence can provide necessary context. In others, it may be more effective to rely on weaknesses that have already emerged. Each choice is made within the flow of the trial, where timing, clarity, and restraint can be just as important as the arguments themselves.

18 Pa. C.S.A. § 908

Advocating for Your Options at Sentencing

After a plea or conviction, the focus shifts from determining guilt to deciding the appropriate penalty. At this stage, a criminal defense attorney’s role is to present the client as a complete person, not just a set of charges, and to argue for a fair and proportionate outcome under the law.

Sentencing is not automatic. Courts often consider a range of factors beyond the offense itself, and a defense attorney works to bring those factors forward in a clear and organized way. This typically involves presenting information such as:

  • Personal Background: Family responsibilities, upbringing, and community ties
  • Work and Education History: Employment stability and efforts toward self-improvement
  • Lack of Prior Record or Limited History: Context that may distinguish the situation
  • Rehabilitation Efforts: Participation in treatment, counseling, or other corrective steps
  • Acceptance of Responsibility Where Appropriate: Steps taken to address the situation

This information is used to provide context and show why a particular outcome may be more appropriate than a harsher alternative.

A defense attorney may also argue for sentencing options that avoid or limit incarceration where the law allows. These alternatives can include probation, treatment programs, or other supervised conditions. The goal is to connect the facts of the case with a result that reflects both the legal framework and the individual circumstances, using preparation and presentation to influence how the court reaches its decision.

Protecting Your Rights Throughout the Case

From the moment a person becomes involved in a criminal matter, legal rights begin to shape what law enforcement can and cannot do. A criminal defense attorney’s role is to ensure those boundaries are respected at every stage, not just when issues arise in court.

Some of the most important rights a defense attorney helps enforce include:

Beyond formal protections, a defense attorney also helps prevent avoidable mistakes that can damage a case. This includes advising the client on how to handle communication, comply with court conditions, and avoid actions that could create additional legal exposure.

By managing both the legal and practical risks, the attorney helps keep the case from becoming more complicated than it already is.

When Should Someone Contact a Criminal Defense Attorney?

The timing of when someone contacts a criminal defense attorney can directly affect how a case develops. Legal issues do not begin at arrest. They often start much earlier, and waiting too long can limit what options are available. Early involvement allows an attorney to guide decisions before problems become harder to fix.

There are several points where contacting an attorney is especially important:

  • Before Speaking With Law Enforcement: If police request an interview or ask questions, what is said can be used later. Getting legal guidance first helps avoid statements that may be misunderstood or taken out of context.
  • After an Arrest or Citation: Once charges are filed or a court date is set, there are immediate obligations and deadlines that need to be addressed correctly.
  • During an Active Investigation: Even without formal charges, being under investigation can carry risk. An attorney can help manage communication and protect against missteps.
  • When Evidence May Not Be Preserved: Surveillance footage, digital records, and witness memories can fade or disappear over time, making early action important.

Waiting until a case is already moving through the court system can limit the ability to address these issues effectively. Reaching out earlier allows for better preparation, clearer decision-making, and a more controlled approach as the case develops.

Contact McKenzie Law Firm, P.C. Today

If you are facing criminal charges or believe you may be under investigation, understanding your legal options is an important first step. Speaking with a criminal defense attorney can help you better understand the process and what to expect.

McKenzie Law Firm, P.C., represents individuals throughout Pennsylvania in a wide range of criminal matters. Reach out to discuss your case and get the information you need to move forward.

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5 months ago
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2 years ago
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Alex Hrskuti
2 years ago
Mr. McKenzie was an absolute miracle to have represented me in my case. He was able to negotiate very well with the prosecution as my case was not very open and shut, at least in my eyes. Having him come in with a fresh view of the case and takeover from the P.D. that was on my case truly shows what an expert in law this gentleman is. I highly recommend you reach out to him for help, he truly changed my future forever!
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Dan N
3 years ago
I highly recommend David McKenzie for any criminal matter no matter how big or how small. He kept in constant communication with me, he made sure I had all the information about my case, and he provided me with all of the possible outcomes so I knew what I was up against. Even with having a felony on my record, he was able to completely get me off my original charge and I only ended up with a $20 fine. I wouldn’t choose anyone else to represent me and if you decide to hire a different lawyer you’re making a mistake. Good Luck!
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Rich Canaris
4 years ago
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