Keira Knightley is the first one to say her new film The Woman in Cabin 10 (Netflix) is “rather tense.” That said, “part of the joy of making something that’s sort of so tense and twisted and strange is when you’re working with really lovely people, you can also have a bit of a giggle.” Knightley plays Laura Blacklock, a journalist on an assignment on a superyacht with billionaires who don’t believe her when she stumbles on a gruesome secret. She says the film is “definitely playing with the