Panchkula, Sept. 7 -- He works with simple clues: a butcher's shop, bald shopkeeper, a pond and even a guava tree, to track down missing persons, most of them children, and reunite them with their families. Not less than an angel in khaki, assistant sub-inspector Rajesh Kumar from Panchkula's Anti Human Trafficking Unit (AHTU) has helped send 573 missing persons back home in the last five years....