Detectives and Investigators Law & Legal Definition

Detectives and investigators use many means to determine the facts in a variety of matters. To carry out investigations, they may use various types of surveillance or searches. To verify facts, such as an individual’s place of employment or income, they may make phone calls or visit a subject’s workplace. In other cases, especially those involving missing persons and background checks, investigators often interview people to gather as much information as possible about an individual. In all cases, private detectives and investigators assist attorneys, businesses, and the public with a variety of legal, financial, and personal problems. 

Private detectives and investigators offer many services, including executive, corporate, and celebrity protection; pre-employment verification; and individual background profiles. They also provide assistance in civil liability and personal injury cases, insurance claims and fraud, child custody and protection cases, and premarital screening. Increasingly, they are hired to investigate individuals to prove or disprove infidelity. 

The majority of States and the District of Colombia require private detectives and investigators to be licensed. Licensing requirements vary widely, but convicted felons cannot receive a license in most States and a growing number of States are enacting mandatory training programs for private detectives and investigators. Some States have few requirements, and 6 States—Alabama, Alaska, Colorado, Idaho, Mississippi, and South Dakota—have no statewide licensing requirements while others have stringent regulations.

Private detectives and investigators who are subject to licensing may be required to have a combination of education in police science, criminal law, or justice, and a certain number of years of investigative experience; pass an evaluation by the Federal Department of Justice and a criminal history background check; and receive a qualifying score on a 2-hour written examination covering laws and regulations. There are additional requirements for a firearms permit.