Read the "rollickingly good literary thriller" and New York Times bestseller that's the inspiration for the most talked about TV series of 2020, HBO's The Undoing starring Nicole Kidman and Hugh Grant (Vanity Fair).  Grace Reinhart Sachs is living the only life she ever wanted for herself. Devoted to her husband, a pediatric oncologist at a major cancer hospital, their young son Henry, and the patients she sees in her therapy practice, her days are full of familiar things: sh