An alibi means that the defendant can demonstrate evidence in a criminal case that they were somewhere other than the scene of the crime. The defendant can rely on another witness to testify in person that they were with or in the same room/area as the defendant. The defendant does not have to take the stand if she/he feels that their past may be questioned and their credibility may be attacked.
However, to prove that the defendant is guilty beyond a reasonable doubt rests with the prosecution. Therefore the judge and the jury will have to weigh the credibility of the alibi. This is because the alibi cannot erase other evidence that is against the defendant.
If a defendant intends to rely on an alibi, they need to disclose this information at trial. At this point, the prosecution will be able to investigate the validity of the alibi and look at its credibility. If the alibi is credible, the prosecutors may even drop charges against the defendant.
For example, if John is accused of murdering Jack, and he relies on the alibi that he was at work at the time of jack’s murder. The prosecution can look at video footage from the street nearby John’s work or office video footage, and have sufficient proof that John could not have killed Jack.
If you or someone you know is charged with a criminal crime and require legal guidance, you should visit a reputed law firm at your earliest.