In the first hour, entitled "Everybody Says Don't" (9:00-10:00 p.m.), Gaby runs into an old acquaintance who's lost everything, Lynette is upset with Tom for his latest "bright idea," Orson threatens to blackmail Bree, and Susan accepts Dave's "friendly" gesture. The season's mystery and suspense come to a shocking end in the second hour, "If It's Only in Your Head" (10:00-11:00 p.m.), as Lynette adapts to Tom's decision to go back to school, Orson takes a beating that Bree cannot comprehend, Gaby's niece moves to Wisteria Lane, and Susan and MJ's lives are in grave danger at the hands of Dave.
DESPERATE HOUSEWIVES stars Teri Hatcher as Susan Mayer, Felicity Huffman as Lynette Scavo, Marcia Cross as Bree Hodge, Eva Longoria Parker as Gabrielle Solis, Nicollette Sheridan as Edie Britt, Ricardo Antonio Chavira as Carlos Solis, Doug Savant as Tom Scavo, Kyle MacLachlan as Orson Hodge, Dana Delany as Katherine Mayfair, Neal McDonough as Dave, Shawn Pyfrom as Andrew Van De Kamp, Brenda Strong as Mary Alice Young, James Denton as Mike Delfino, Charlie Carver as Porter Scavo, Max Carver as Preston Scavo, Joshua Moore as Parker Scavo and Kendall Applegate as Penny Scavo.
Guest starring in "Everybody Says Don't" are Gale Harold as Jackson Braddock, Richard Burghi as Karl and Lily Tomlin as Roberta. The episode was directed by Bethany Rooney and written by John Pardee and Joey Murphy.
"If It's Only in Your Head" was directed by David Grossman and written by Jeffrey Richman.