Former Wisteria Lane resident Katherine Mayfair moves back onto the cul-de-sac with her new husband, Adam, a gynecologist who treats Susan, and her daughter, Dylan, who can't remember her onetime best friend Julie. Meanwhile, news about Edie spreads, and Lynette's chemotherapy is wearing her down. As is the fact that she's keeping her cancer a secret. Bree's secret---her fake pregnancy---is also becoming a problem.