The premium Detective Agency In Delhi, First Indian Detective Agency (FIDA) has been the home of the best private investigators. The agency offers both personal and corporate investigation services. With ISO 2008-9001 authentication certificates, FIDA is an accredited and qualified non-public investigation organization. We provide factually accurate and reliable investigation services involving both personal and corporate investigation services. With a superb team of private investigators, we claim to be the best among all the leading Best Detective Agency in Delhi NCR for background verification and matrimonial investigations.