The Forgetting: A Portrait of Alzheimer's is a 90-minute special aimed at helping people better understand and cope with the fearsome disease of Alzheimer's. The cornerstone of the project is a 90-minute documentary based on David Shenk's best-selling book The Forgetting. Like Shenk's book, the documentary is a dramatic, compassionate, all-encompassing look at Alzheimer's that weaves together the history and biology of the disease, the intense real-world experiences of Alzheimer's patients and caregivers, and the race to find a cure.