Rahul Rai Gupta is the Best detective in Delhi, India, famous by the brand name Detective Guru because he has been successfully experienced for more than 25 years in the international detective industry. He has trained Nemours people who wanted to become the best detectives. For detailed information, the name Rahul Rai Gupta can be googled, where one can easily find many print, social, and electronic media interviews from the best and most famous private detective agency in Delhi, India.