Part 1: Ellie Manning is a happily married schoolteacher, trying for a baby with her accountant husband, Greg. Then one night, two policewomen come to her door to inform her that Greg has been killed in a car crash--along with a woman named Milena, who was in the car with him. The police and Milena's widower, Hugo, believe the two were having an affair, but Ellie is not convinced.