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Legal Analysis

How to Testify in a Criminal Trial: Expert Tips

calendar_todayFebruary 11, 2026

Last updated:

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lightbulbKey Takeaways

  • check_circleAnswer only what is asked
  • check_circle"I don't remember" is valid
  • check_circleLook at the judge
  • check_circleBeware of perjury/false testimony

Quick answer

To testify well at trial, listen to the full question, answer only what is asked without giving unrequested explanations, admit "I don't remember" when it is true rather than inventing, look at the judge, and stay calm and respectful. The defendant does not swear to tell the truth and can invoke the right to remain silent, whereas a witness is obliged to tell the truth and lying exposes them to the offence of false testimony. The key is always to prepare the questioning with your lawyer, never to go in "to see what happens".

Need help with your case? Talk to a criminal defense lawyer at Alonso Sala.

No matter how right you are: if you testify badly, you will lose. Nerves, pressure from the prosecutor or one poorly worded answer can ruin the best defense. Here are 10 golden rules for testifying as a suspect (or witness) in a trial. Our specialist criminal lawyers can help you with your case.

Golden Rules for Testifying

1. Listen to the full question

Do not answer before they finish. Take 2 seconds to think before speaking. That is not hesitating, it is reflecting.

2. Answer ONLY what is asked

Do not give explanations nobody asked for. If the answer is "Yes", say "Yes" and stay quiet. The more you talk, the more chances you have to make a mistake.

3. "I don't remember" is a valid answer

It is better to say "I don't remember" than to invent a fact and then have it shown to be false. Lying is punished (or destroys your credibility).

4. Look at the Judge

Even if the lawyer asks the question, the answer is for the Judge. Look at him/her. Convey sincerity.

5. Dress appropriately

Image matters. You do not need a suit and tie if it is not your style, but you do need clean, discreet and respectful clothing. No sunglasses on your head, caps or T-shirts with aggressive slogans.

6. Be respectful

Address the Judge as "Your Honor". Do not get angry with the prosecutor (he is doing his job, which is to accuse you). If you are provoked, stay calm.

7. Do not contradict yourself

Go over your previous statement (the one made in the investigation phase) with your lawyer. If you change your version, you will be confronted with it.

8. If you are a Suspect: You have the right to lie (but don't do it badly)

The defendant does not swear to tell the truth. But a caught lie is worse than silence. It is better to invoke your right to remain silent on certain questions.

9. If you are a Witness: You are obliged to tell the truth

If you lie as a witness, you commit the offense of False Testimony (which carries prison time). Be careful.

10. Prepare the questioning with your lawyer

Never go in "to see what happens". You must know what we are going to ask you and which weak points the prosecutor will attack.

Tip

If you need water, ask for it. If you do not understand the question, say: "I have not understood the question, could you repeat it?". Do not answer at random.

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If you are facing a criminal matter, our team of specialist lawyers can help. Contact us for a case evaluation.

Frequently asked questions

How should I answer questions at trial?expand_more

Listen to the full question before answering, take a couple of seconds to think, and answer only what is asked, without giving explanations nobody requested. The more you talk, the more chances you have to make a mistake.

Can I say I don't remember?expand_more

Yes. "I don't remember" is a valid answer and is better than inventing a fact that is later shown to be false. Lying is punished or destroys your credibility, so when in doubt it is preferable to acknowledge that you do not remember.

Does the defendant have to tell the truth?expand_more

No. The defendant does not swear to tell the truth and can invoke the right to remain silent. A caught lie is worse than silence, so it is usually preferable to stay silent on certain questions rather than lie badly.

What happens if I lie as a witness?expand_more

A witness is obliged to tell the truth. Lying as a witness is the offence of false testimony, which can carry a prison sentence, so the utmost caution is required.

How should I prepare to testify?expand_more

Never go in "to see what happens": prepare the questioning with your lawyer, know what you will be asked and which weak points the prosecutor will attack, go over your previous statement so as not to contradict yourself, dress discreetly and respectfully, and direct your answers to the judge.

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