The Babysitter — Bridy McAvoy

Ellis and Isla are going out to help her brother and his wife celebrate their wedding anniversary. At the last minute, their babysitter has a problem and sends her older sister as a substitute. When they get back Ellis is out for the count so Isla has a drink with Laura. One leads to two, and then a foot massage leads to something else. By the time Isla realizes their normal babysitter doesn't have a sister it's far too late, and oh . . . far too nice.