" forty-five and eight fifteen. I know from the quality of the light, from the sounds of the street outside my window, from the sound of Cathy vacuuming the hallway right outside my room. Cathy gets up early to clean the house every Saturday, no matter what. It could be her birthday, it could be the morning of the Rapture—Cathy will get up early on Saturday to clean. She says it’s cathartic, it sets her up for a good weekend, and because she cleans the house aerobically, it means she doesn’t have to go to the gym. It doesn’t really bother me, this "

― Paula Hawkins , The Girl on the Train