Book excerpt: From internationally acclaimed author Nicci French comes a shattering psychological thriller in the spirit of Gone Girl. Alice Loudon has it all: a devoted boyfriend, a marvelous circle of friends, a challenging job as a research scientist. Then one morning, on her way to work, she exchanges a lingering look with a devastatingly attractive man. Adam Tallis is the essence of every female fantasy-a daring mountain climber who has been hailed as a hero. As a lover, he is more passionate than Alice's wildest imaginings. Soon there isn't anything or anyone she wouldn't give up to stay by his side. But as she learns more about her lover, she enters his world of risk and transgression-and begins to uncover a past filled with troubling secrets. Adam hurts her sometimes and three women in his life have died accidental deaths. Determined to uncover the truth, Alice turns detective as her fears start to come true. Soon love and sexual obsession overwhelm her until they threaten everything: her safety, her sanity and her life.