Private investigators, often called PIs, are professionals who conduct investigations for individuals or businesses. They gather information, conduct surveillance, and help solve various cases, such as infidelity, missing persons, or fraud. PIs may work independently or as part of a larger agency, and they often have backgrounds in law enforcement or legal fields. To become a private investigator, individuals typically need a license, which requires meeting specific state requirements. PIs use various tools and techniques, including interviews, background checks, and digital forensics, to uncover information and provide clients with detailed reports on their findings.