Mehta is currently working on the script of the movie, which will be produced by Jody Colero of Silent Joe Inc and Hussain Amarshi of Mongrel Media.
'Secret Daughter' revolves around two families, one in Mumbai, India forced to give a baby up for adoption, and another in San Francisco raising a brown-skinned child from another culture, the Hollywood Reporter said.
Canada's Harold Greenberg Fund helped option the novel which was published by Harper Collins for movie treatment.
Mehta has previously adapted Bapsi Sidhwa's novel 'The Ice Candy Man' and Salman Rushdie's Booker-prize-winning 'The Midnight's Children'.