First Indian Detective Agency (FIDA) is one of the best detective agencies in Delhi that provides comprehensive investigation services for individuals and corporations. Personal investigation services include pre-marital and post-marital investigation, loyalty test, extramarital affairs investigation and financial fraud investigation. For corporate clients, provides pre- and post-employment investigations, conducts sting operations, asset verification and conduct due diligence. labor. FIDA's team of talented investigators uses advanced technology to deliver exceptional results and has established itself as a leading detective agency in Delhi.