Forensic scientists are professionals who apply scientific principles to solve crimes. They analyze physical evidence collected from crime scenes, such as fingerprints, blood, and hair samples. Their work helps law enforcement agencies understand what happened during a crime and can provide crucial information for legal cases. These scientists often specialize in various fields, including toxicology, DNA analysis, and ballistics. They use advanced technology and techniques to examine evidence and may testify in court as expert witnesses. Their contributions are vital in ensuring justice is served and in helping to exonerate the innocent.