Some China travelers move legally through the heavily guarded gateway separating Hong Kong from Red China. Others continue to risk death by evading border guards and entering illegally into the refugee-swollen city. And for the first time since Mao Tse-tung won power in 1949, selected newsmen, businessment, and tourists from the West are again permitted to step inside the wall and observe the most populous - and least known - nation on earth. What's behind the wall? What has happened to Christians in this gigantic atheist nation? Some of the chilling and challenging answers were found by Don Crawford in interviews with courageous escapees and with keen-eyed China watchers in Hong Kong. They all God still lives behind the wall of China.