After adapting Salman Rushdie's "Midnight's Children" for the big screen, Indo-Canadian filmmaker Deepa Mehta is working on a script based on Shilpi Somaya Gowda's novel "Secret Daughter" about how two families are bound by an adoption.

Mehta is said to be busy penning the script for producers Jody Colero of Silent Joe Inc. and Hussain Amarshi of Mongrel Media, reports hollywoodreporter.com.

"Secret Daughter" tells the story of two families, one in Mumbai, India, forced to give a baby up for adoption, and another in San Francisco, in the US, raising a brown-skinned child from another culture.