Gaurav Tiwari, 28 years old, is one. He uses equipment to detect the presence of a spirit in an area or building.
Mr. Tiwari is a trained commercial pilot, but set aside that career to study paranormal investigation in U.S. He set up his investigation service in Delhi in 2009.
This career comes with its own set of social hazards."People misunderstood me as a 'tantrik' (someone who does black magic and witchcraft)," says Mr. Tiwari. His relatives thought he was crazy.