Report on the extent of the tyranny of Mao Tse Tung's regime from 1949 until his death in 1976. His rise to power and the revolution which swept away the corruption of Chiang Kai Chek was accompanied by optimism, but in the followinging 25 years he was to almost destroy China. His doctor speaks of Mao's sexual encounters with young girls and a former Red Guard reveals that cannibalism played a part in the Cultural Revolution.