Private investigators offer a wide array of services, but background checks account for the majority of their business. The more information you have on the person, the easier the process, but a PI can get results with little to go on.
Using databases only open to them and law enforcement, private detectives dig deep for accuracy’s sake. Primary focuses in a background check might include criminal, citizenship, financial, credit, driving, employment, litigation, education and military histories. Meanwhile, most online options only gather public information, and don’t decipher it.