Complete story — includes the ending
Adele Delfino, Mike's overbearing Southern mother, arrives for a visit and continuously insults Susan for not being a "complete" housewife. Susan asks Mike to make Adele apologize and goes into labor, giving birth to a baby boy. Gabrielle and Carlos discover that Ellie is a drug dealer, and the police ask the couple to pretend not to know anything so they can catch Ellie's supplier, in exchange of ending Carlos' probation. Bree sabotages Edie's real estate business to exact revenge on her for kissing Orson. Edie learns that Danielle and Austin are Benjamin's biological parents and blackmails Bree, prompting Bree to confess the truth to her friends. Bree, Susan, Lynette, and Gabrielle sever ties with Edie, who then decides to leave Wisteria Lane to spend time with Travers. Lynette and Tom hire a family counselor, who encourages Lynette to spend time with Kayla to develop their mother–daughter bond. When Kayla threatens to hurt Penny, Lynette slaps Kayla, who in turn calls to tell the counselor that Lynette has been hitting her. Wayne discovers that Dylan is not his biological daughter and may not be the same girl he raised.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Desperate Housewives season 4. HTML formatting and reference markers removed. · Content license