Bestselling author Terry Pratchett has early onset Alzheimer's disease. And he wants Alzheimer's to be sorry that it ever caught him. In the second of this two-part series, Terry confronts his future living with the disease. He travels to America to witness first-hand how they are coping with the 'tsunami of Alzheimer's', and meets the unlikely doctor who stumbled across a controversial new treatment that he claims produces remarkable results in minutes.