The breathtaking new novel from the author of STILL ALICE, now adapted into a film starring Julianne Moore, Alec Baldwin, and Kristen Stewart. Joe O'Brien is a police officer from Charlestown, Massachusetts, a devoted husband, proud father of four grown children. When Joe begins experiencing bouts of disorganized thinking, temper outbursts and involuntary movements, he attributes these to stress. Finally, he agrees to see a neurologist and is handed a diagnosis that will change his and his family's lives forever: Huntington's Disease. Huntington's is a lethal neurodegenerative disease with no treatment and no cure. Each of Joe's children has a fifty per cent chance of inheriting it. Observing her potential future play out in her father's escalating symptoms, his daughter Katie wrestles with the questions this test poses for her young adult life. Praised for writing that 'explores the resilience of the human spirit', Lisa Genova's new novel is as powerful and unforgettable as the characters at its heart.