Desperate Housewives - Season 4 (2007)

Edie receives unexpected news; Susan's act of friendliness towards her new gay neighbors is mistaken for homophobia; Bree receives an unexpected visit from Phyllis.

Katherine and Lynette fight for the vacant position of Association President; Bree's former mother-in-law draws battle lines over Danielle's unborn child.

As Halloween approaches, Edie's biggest fear comes true; Susan discovers Mike's father, who he claimed was dead, is actually alive; Danielle goes into labor during Bob and Lee's Halloween costume party.

Lynette's estranged sisters, Lydia and Lucy, come to visit where they argue over taking in their irresponsible mother, Stella, who continues to be a nuisance to everyone. While having dinner with Susan and Mike, Bree and Orson realize they share different views on whether Danielle's newborn baby should be circumcised. On a boat, Victor confronts Gabrielle about her affair with Carlos, and she responds by throwing him into the ocean after thinking that he is going to murder her. Later, Bree informs Susan that she thinks Mike is a drug addict. Elsewhere, Dylan asks her ...

A mysterious stalker from Adam Mayfair's past, named Sylvia, shows up on Wisteria Lane. Police detectives question Gabrielle about Victor's whereabouts while Carlos argues with her about reporting Victor's attempt on their lives. Danielle's crying baby puts stress on Bree and Orson's marriage, as well as on Andrew who decides to move out. Meanwhile, Lynette has a reunion with her long-lost stepfather, Glen, over wanting to find her mother now living on the streets. Susan notices Mike is behaving strangely and soon realizes that he is still hiding his painkiller ...

Things take an unexpected turn when a large tornado hits Wisteria Lane, forcing the residents to seek shelter; Katherine comes clean about her and Adam's past.

In the aftermath of the tornado, Lynette's learns of her family's fate; An incriminating letter, left by Katherine's late aunt, forces her and Adam to come to terms with a dark secret.

A few skeletons in Kathryn Mayfair's abundant closets are sneaking out, and a surprise wedding ceremony takes place.

Lynette gets a surprise when a person from her past shows up at the pizzeria.

Bree and Katherine decide to become business partners, and Mike discovers the truth about the accident that almost killed him.

Lynette discovers who started the fire at Rick's restaurant; Bree gives Orson an ultimatum to turn himself in; Susan reconnects with Karl; Katherine finds out that Dylan is secretly meeting with her father.

Gabrielle and Carlos finally learn the truth about Ellie's "work" and they also discover the police are already onto Ellie and her drug-selling ring and have been staking out the Solis home for some time and want to use the Solises to arrest Ellie in a sting operation. Meanwhile, Bree declares an all-out war against Edie after learning that she's now after Orson for her latest man conquest. But when Edie does something shocking involving Orson who makes the mistake of revealing the origins of Bree's baby Benjamin, Bree is forced to come clean to the rest of the ...

Susan gives birth; Bree and Katherine do some self-defense shooting; Kayla pushes her plan to destroy the Scavo family into full force.

Several residents are faced with deadly threats; Adam is held captive by Wayne; Katherine's secret past is finally revealed, after she and Bree are held hostage.