Casting Keira Knightly turns Lo into a different sort of character than the novel’s unreliable narrator. Photo: Parisa Taghizadeh/Netflix Spoilers follow for The Woman in Cabin 10 film adaptation, which premiered October 10 on Netflix, and the Ruth Ware novel on which it’s based. Make some room in the ocean, orcas, because The Woman in Cabin 10 is here to aid your assault on yacht culture. The adaptation of Ruth Ware’s same-named 2016 novel takes quite a few liberties with its source material,