John A. DeMarr P.I. is a renowned team of private investigators who specializes in resolving the matter by shedding the light on the reality. Since 1988, we have been providing professional, licensed private investigation and private detective services to businesses and individuals in California and surrounding areas. Our clients include law firms, insurance companies, major corporations and small businesses. Affiliated with the California Association of Licensed Investigators, the World Association of Detectives, the California Association of Legal Support Professionals and the National Association of Professional Process Services, we are proud to offer experience, training, technology, professional discretion and thoroughness to meet the clients’ needs.