The adapted screenplay, written by David E. Kelley and directed by Susanne Bier, tells the story of the heroine Grace Sachs (Nicole Kidman) living the ideal life: Grace is a successful psychotherapist with an excellent doctor husband and son in an elite private school, and she is preparing to publish a gender book, "You Should Have Known," which mainly scolds women for not following their instincts and failing to see what their partner means. However, a few weeks before publication, when a death involved her suddenly missing husband, Grace discovered that there was a huge crack in her life, and that she had been foreboding in the past, but she did not listen to her intuition. After things got into a fuss, the hostess had to give up her present life for her son. Hugh Grant plays Jonathan Sachs, a widely acclaimed pediatric oncologist who gives the impression of a loyal husband and a good father, but there are unusual signs long before he goes missing. Noah Jupe plays the heroine's 12-year-old son, Hen....