A criminal investigator is a law enforcement professional who specializes in solving crimes. They gather evidence, interview witnesses, and analyze information to identify suspects. Their work often involves collaborating with other agencies and using various tools, such as forensic science, to build a case. Criminal investigators typically work on serious offenses, including homicides, robberies, and fraud. They may also testify in court to present their findings. This role requires strong analytical skills, attention to detail, and the ability to think critically under pressure, making it essential for maintaining public safety and justice.