Meet Vish Puri, India's most private investigator. Portly, persistent, and unmistakably Punjabi, he cuts a determined swath through modern India's swindlers, cheats, and murderers.In hot and dusty Delhi, where call centers and malls are changing the ancient fabric of Indian life, Puri's main work comes from screening prospective marriage partners, a job once the preserve of aunties and family priests.But when an honest public litigator is accused...