An expert witness is a person who has specialized knowledge or expertise in a particular field, such as medicine, engineering, or finance. They are often called upon in legal cases to provide their professional opinion or analysis on complex issues that require a deeper understanding than what a typical person might have. Their insights can help judges and juries make informed decisions based on facts and evidence. In court, expert witnesses present their findings and may be questioned by both sides. Their role is crucial in cases involving technical subjects, such as medical malpractice or accident reconstruction, where their expertise can clarify important details and influence the outcome of the trial.