Liane Moriarty's 'The Husband's Secret' delves into the lives of three women whose paths intertwine after a devastating secret comes to light. Cecilia Fitzpatrick, a busy wife and mother, discovers a letter written by her husband, to be opened only upon his death. Driven by curiosity, she opens it prematurely, unearthing a shocking truth that shatters her perfect life and has far-reaching consequences for everyone involved. The novel masterfully explores themes of guilt, responsibility, the weight of choices, and the profound impact of secrets on relationships and communities. It's a gripping narrative about how one revelation can irrevocably change everything and the lengths people go to protect their loved ones.