A break-in on Wisteria Lane leaves the neighbors feeling vulnerable, especially Susan, who reluctantly accepts a date with a persistent policeman after Mike appears indifferent to her. Rex takes the kids away for the weekend as a lonely Bree finds herself bonding with Zach. Meanwhile, Lynette and Tom pull out all the stops to get their uncontrollable twins Porter and Preston accepted at a prestigious private school, and the unexpected arrival of Carlos' mother puts a crimp in Gabrielle's covert love life.

Maisy Gibbons' series of unfortunate events shock the residents of Wisteria Lane when she is finally caught and arrested for prostitution. This leaves unexpected consequences for Bree and Rex when Maisys' little black book becomes public of all her clients.

Gabrielle and Carlos also face a crisis of their own when the sewer system goes out at their house. Also, Lynette braves a scandal herself when it's rumored that the twins started the school's head lice epidemic. Meanwhile, as Susan sinks into depression over her breakup with Mike, she finds a surprising ally.

Susan and Mike decide to move in together, much to Edie's displeasure. Meanwhile, Lynette takes steps to make sure Annabel doesn't come between her and Tom. Also, Bree comes to a realization about her "buddy" George the pharmacist who continues to interfere in her and Rex's lives. Carlos' legal problems take a turn for the worse, when Gabrielle decides to leave him. Mrs. Huber's journal reveals some secrets. Lastly, two new faces arrive on Wisteria Lane.