"It’s that shift, that moment of modernity,” Ms. Waters said. “The impact of the First World War was to shake things up enormously, loosening up old mores, fashions and behaviors. The early ’20s were like the waist of an hourglass. Lots of things were hurtling toward it and squeezing through it and then hurtling out the other side.” Check out the full piece here. The Paying Guests is available on September 16th!