A witness must account for what they have seen and what happened during criminal activity that they saw happening in the criminal trial. They are there to clear up what happened when others are unsure.
Yes; as long as it is not the one being accused, any person must be a witness if asked to do so.
It depends on why the witness is not there, what kind of witness it is, what kind of case it is, and what sort of evidence the witness is expected to give. In a criminal trial, the case may be dismissed if there is no witness. Or the trial may be delayed while law enforcement finds and brings the witness to court (if they are ignoring a subpoena). If the witness is ill or travelling, the case may be continued to wait for the witness. If the witness is not key, the parties may proceed without him/her, or they may shift around the order or witnesses to allow that witness to appear later in the trial.
That is a question for jury to take into consideration when the deliberate - which I'm sure will pointed out by the defense.
Yes, a witness can plead the Fifth Amendment during a trial to avoid self-incrimination. This means they can refuse to answer questions that may reveal information that could be used against them in a criminal case.
Yes, if the testimony is to rebut or impeach evidence given in the defense case in chief.
the final round of questioning of a witness in a trial
Yes, the defendant can serve as a witness in the trial, but they are not required to do so.
Yes. Witness testimony is one of the most common types of evidence introduced in a criminal trial.
My Trial as a War Criminal was created in 1949.
Witnesses are excluded from the courtroom until it is their time to testify. This prevents their testimony from being tainted or influenced by hearing any other witness's testimony. Once they have testified, and if they are not subject to being "recalled" for further testimony, they may sit in court and observe the remainder of the trial.
The sides in a civil trial are the same as a criminal trial. There is a plaintiff and a defendant. In a criminal trial the plaintiff is usually the jurisdictioni charging the defendant.
Barabbas was the criminal that was released at the trial of Jesus.