Criminal Procedure: How a Criminal Case Moves

What criminal procedure is, and its code and principles

Criminal law says what is a crime. Criminal procedure says how the state may catch, charge and judge someone. Most countries put these rules in a Criminal Procedure Code (in Ukraine, the Criminal Procedure Code of 2012). The rules protect two things at once: society from crime and the person from unfair treatment.

Main principles found in nearly all systems:

• Legality: officials may act only as the law allows.
• Presumption of innocence: you are innocent until a court proves guilt beyond reasonable doubt. Doubt goes to the accused.
• Right to defence: a lawyer (free if you cannot pay), the right to stay silent and not to testify against yourself.
• Fair, public trial before an independent, impartial court, within a reasonable time.
• Equality before the law and equal chance for both sides to argue (adversarial principle).
• Privacy and dignity: no torture; searches only with proper authority.

Parties to the proceedings

Each person has a clear role:

• Court (judge or panel, sometimes jurors): independent; decides. An investigating judge in some systems, as in Ukraine, supervises the investigation and approves measures that touch rights.
• Prosecutor: speaks for the state, guides the investigation and presents the accusation in court.
• Investigator: collects evidence in the pre-trial stage.
• Suspect: told in writing of the suspicion. Accused (defendant): the person whose case has gone to court.
• Defence lawyer: protects the suspect or accused.
• Victim: the person harmed. Can give evidence, ask questions and claim damages.
• Witnesses, experts, interpreters: help the court with facts and special knowledge.

Pre-trial investigation and notice of suspicion

The path from crime to court:

1. Report. A victim, witness or the police themselves note a crime. The authority must record it and start work.
2. Pre-trial investigation. The investigator, under the prosecutor's lead, collects evidence: questioning, searches, expert reports. Searches and secret surveillance need a judge's permission.
3. Notice of suspicion. When enough evidence exists, the person is formally told in writing what he is suspected of. From now he is a suspect with rights: to a lawyer, to silence, to know the reasons.
4. Close of investigation and indictment. The defence may see the file. The prosecutor sends an indictment to court, or closes the case if there is not enough proof.

The suspect may not be held for long without a judge: usually the first hours (in Ukraine up to 72 hours) before a court decides.

Preventive measures and detention

A preventive measure makes sure the suspect comes to court, does not hide or change evidence, does not pressure witnesses and does not commit another crime. It is not a punishment, because guilt is not yet proven.

From lightest to heaviest (Ukraine's list):

1. Personal promise (personal commitment) to come when called.
2. Personal guarantee by a trustworthy person.
3. Bail: money pledged to the court; lost if the suspect breaks the rules.
4. House arrest: staying home for set hours, often with a bracelet.
5. Detention: custody. The last resort.

A court chooses the measure on the prosecutor's request, with reasons and a time limit. The lightest measure that does the job is used. Detention needs a serious risk and a serious crime, and must be reviewed regularly. Minors are treated more carefully.

Trial stages and the jury

The court of first instance goes through these stages:

1. Preparatory hearing: checks the case is ready, decides on evidence and the trial date.
2. Opening of the trial: identity checked, rights explained, accusation read.
3. Examination of evidence: witnesses, documents, experts. Both sides can question.
4. Closing speeches (debates): prosecutor, victim, defence.
5. Last word of the accused.
6. Verdict: guilty (with sentence) or not guilty. Reasons are written.

Either side may then appeal to a higher court; a case can go further on points of law.

Jury: in some countries ordinary citizens (jurors) judge the facts. In Ukraine a jury of three lay jurors sits with two judges in the most serious cases (life imprisonment) if the accused asks for it. Jurors decide guilt with the judges; the aim is to bring community sense and fairness into the room.

Try it: act out a mock trial

With friends, pick roles: judge, prosecutor, defence lawyer, accused, witness. Use a simple made-up case, such as a missing lunch box. Follow the six trial stages in order. Ask: did the accused get a chance to speak? Was each side heard equally? Then use the 3D Next button to check you did not miss a stage.

Key formulas and definitions

• Road: Report → Pre-trial investigation → Notice of suspicion → Indictment → Trial → Verdict → Appeal
• Preventive measures (light → heavy): personal promise < guarantee < bail < house arrest < detention
• Standard of proof: guilt must be proved beyond reasonable doubt
• Trial stages: preparatory → opening → evidence → speeches → last word → verdict

Worked examples

Common mistakes

• Thinking a suspect is already guilty. Until a court gives a verdict, he is presumed innocent.
• Calling detention a punishment. It is a preventive measure to secure the process; punishment comes only after a guilty verdict.
• Mixing up suspect and accused. A suspect is told of the suspicion in the investigation; an accused is the one whose case is in court.
• Thinking the police alone decide on detention. A court must approve it.