The Lin Biao Incident in 1971 remains one of the foremost enigmas in the history of the People's Republic of China. The Chinese government's handling of the incident has given rise over the years to much speculation as to the truth of Lin Biao's fall and death. The authors of this article discuss different hypotheses concerning the incident including the official Chinese version and a popular provocative account. Special attention is given to a newly emerging hypothesis beign discussed by Lin's daughter and others who were close to him. It reveals important new dimensions to the story of Lin Biao and, although still needing more corroborating evidence, this newer version opens up a new perspective on the incident. Aware of the reasons for the Chinese government's reluctance to pursue this matter, the authors note the passage of time since the incident and the desirability of shedding more light on it. They express hope that those who can provide useful information on it will soon do so.