Season synopsis
Contains spoilers for this season and earlier seasons.
Susan and Mike begin married life while preparing for a baby; Lynette starts chemotherapy, and Bree hides her pregnant daughter Danielle by pretending to be expecting herself. Gabrielle is married to mayor Victor Lang but continues her affair with Carlos, whom Edie has forced into an engagement by threatening to expose his offshore account. Katherine Mayfair returns with her doctor husband Adam and teenage daughter Dylan. Dylan cannot remember her childhood friendship with Julie, and Katherine reacts sharply when the neighbors ask about Dylan's father.
A tornado devastates Wisteria Lane. Tom and the children shelter in Karen McCluskey's basement, where Ida Greenberg dies saving them; Lynette and Karen survive elsewhere. Victor pursues Carlos during the storm and is killed by flying debris; Carlos is badly injured and loses his sight. Gabrielle and Carlos marry after Victor's death. Susan gives birth, and Bree starts catering with Katherine. Bree's marriage strains when Orson's sleepwalking confession reveals that he ran Mike down, and Lynette learns that Kayla has been pushing the twins into trouble and falsely accusing Lynette of abuse. Tom exposes her lies and sends her to her grandparents.
The finale brings Katherine's hidden past into the open when Wayne kidnaps Adam and holds Katherine and Bree at gunpoint, demanding to know what happened to his daughter. Katherine reveals that the real Dylan Davis died in a childhood accident; she and her aunt buried her, and Katherine adopted a Romanian orphan who grew up under Dylan's name. Ellie, hiding from the police, runs into the house and Wayne shoots her. Adam returns and knocks Wayne down, but Wayne threatens Katherine again, so she shoots him dead. The women support a self-defense account, and a five-year jump shows their changed lives.