Missing in the land of Gods

At first glance, Australians Jock and Dianne Chambers look like an ordinary couple on a trip around India. But their motives for being here are very different: they are searching for their son Ryan, who vanished in 2005 after staying in an ashram. He vanished without a passport, money or his cellphone, leaving only a note behind: "If I'm gone, I'm not dead. I need to free minds, but first I had to free my own."