The housewives decides to organize the dinner Mary Alice was organizing; Gabrielle is blackmailed by a 9 year old girl; Bree tries to hide her broken marriage; Karl returns to discuss terms with Susan.
A break-in on Wisteria Lane leaves the neighbors feeling vulnerable; After Rex takes the kids away for the weekend, Bree finds herself bonding with Zach; Gabrielle takes drastic measures to keep Juanita oblivious to her secret.
Lynette locks horns at the twins' school with officious mom Maisy Gibbons; Susan continues to investigate the mystery of Zach's sudden disappearance; Juanita comes closer to discovering Gabrielle's dirty little secret affair.
Susan is miffed when Mike gets an unexpected house guest named Kendra; Andrew gets into a serious car accident that puts Mama Solis in the hospital; Mr. Shaw comes closer to solving who was blackmailing Mary Alice.
Gabrielle decides to organize a glamorous Halston fashion show; Bree and Rex are now at odds with each other on how to punish Andrew; The police investigate the skeletal body in a toy chest that Paul Young dumped in the river, and begin to close in on his secret.
Bree finds out that Rex is cheating, and he has a heart attack; Susan plans to take her relationship with Mike to the next level; Lynette, suspicious of her new nanny Claire, decides to secretly videotape her.