Private investigators, often referred to as PIs, are professionals who conduct investigations for individuals, businesses, or legal entities. They gather information, conduct surveillance, and perform background checks to uncover facts related to various cases, such as infidelity, missing persons, or fraud. PIs typically have a background in law enforcement or a related field, and they use various tools and techniques to gather evidence. Their work can involve interviewing witnesses, analyzing documents, and utilizing technology to track information. Private investigators operate under specific laws and regulations, ensuring that their methods are legal and ethical.