When American photojournalist Mary Ellen Mark (1940-2015) froze frames on the sex workers and their patrons at Mumbai’s Falkland Road in 1978, it marked the fulfilment of a wish she had harboured for a decade: to somehow “penetrate the superficial view” of Falkland Road, a lane in Kamathipura. She had first arrived in the city in 1968 on an assignment as the leading photographer with Magnum, an international agency, and was deeply struck by the images of “cage-girls” peeping out of the windows of their grimy hovels. The curiosity of a firang woman about the prostitutes was met with hostility and suspicion from Madams, as the pimps or brothel keepers are colloquially called. For ten years, these images haunted Mary Ellen till she revisited these bylanes. She spent several months here, getting herself immersed in the rhythm of life in the red-light area. In the intervening years, she had come to India eleven times, trying all the while to earn the trust of her subject.