A private investigator (often abbreviated to PI; also known as a private detective, an inquiry agent or informally a private eye) is a person who can be hired by individuals or groups to undertake investigatory law services. Private investigators often work for attorneys to problem solve in civil and criminal cases.
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Detektiv fotografiert aus einem Auto
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"Vidocq arresting Pons", engraving by George Cruikshank. Vidocq. Memoirs of Vidocq. The Principal Ag...
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Sherlock Holmes in "The Adventure of the Abbey Grange."
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First logo for the Pinkerton National Detective Agency. Color version.