Orson takes a beating; Lynette adapts to Tom's decision to go back to school; Gaby's niece moves to Wisteria Lane; and Dave's "friendly" gesture proves to be anything but to Susan and MJ.

Gaby runs into a down-on-her-luck old acquaintance; Tom decides to go back to school (much to Lynette's dismay); Orson threatens Bree with blackmail; and Susan accepts Dave's "friendly" gesture.

There's deception aplenty on Wisteria Lane: Bree keeps Orson in the dark; Susan and Jackson try to fool the authorities; Katherine won't level with Mike; and Tom tries to hide his age. Meanwhile, a witness to Dave's crimes surfaces.

Bree hires a good lawyer and behaves badly to do it; Jackson pops back into Susan's life and pops a question; Tom and Lynette bargain for sex, while Dave does some bargaining of his own; Katherine plays dirty to win Mike; Gaby makes a deal with Juanita that tests her vanity.

Lynette and Orson are hiding something from Tom and Bree, respectively, but Katherine makes a confession to Mike, and Susan confides in Dave. Meanwhile, Tom is behaving oddly, and Gaby is covering for him.

The housewives reminisce about Edie: Susan recalls the first time they met; Lynette looks back on a night to remember; Gaby remembers a night of friendly competition; and Bree is reminded of her thoughtfulness toward Orson.

Bree decides to sell her business; Lucy makes Lynette work overtime while Carlos' equally long hours upset Gaby; Karl Mayer enrolls his son in Susan's school; and Mike, Katherine and Dave finally go on their camping trip. Meanwhile, Edie finally discovers why Dave wanted to move to Wisteria Lane.

A teacher gets the wrong idea when Susan tries to impress her; Gaby, for reasons of her own, wants Carlos to hire Lynette; Bree is determined not to let Orson's bad habit embarrass her; and Edie digs deeper into Dave's past.

While helping Tom Scavo find a new job, Bree discovers something shocking about Orson; Carlos' adulterous boss uses Gaby as his cover; Edie probes Dave's past after a chance encounter with an old acquaintance.

Susan starts a job to provide for MJ---and becomes both angry and jealous when Mike lets Katherine babysit him; Lynette wants Tom to sell the recession-wracked pizzeria; Carlos gets a big bonus after Gaby discovers his boss's dirty little secret; Bree gives Andrew a raise, raising Orson's hackles; and Dave grows tired of the neighbors' suspicions of him.

Bree buys a new car while Lynette and Tom resolve to sell his Mustang for extra cash; Susan is determined to send MJ to a school she and Mike can't afford; Gaby joins Edie's "boot camp" to get back into shape; and Lee wrestles with telling Lynette and Tom some disturbing facts about Dave.

When neighborhood handyman Eli Scruggs dies, the housewives realize just how much he affected their lives. Gaby recalls how Eli helped her make friends when she arrived; Lynette remembers how he came to her aid when she was overwhelmed and neglecting Penny; Susan reflects on how he lent her his shoulder to cry on each time a man walked out on her; Edie looks back on their special friendship; and Bree thinks fondly of his small gesture that had a big effect.

Susan and Edie accidentally lock themselves in a basement; Bree encounters someone who'll stand up to her; Gaby loses control of her girls and turns to Carlos for help; Lynette's search for Porter leads to her mom; Katherine and Mike define their relationship; and Dave's plan for revenge takes a new turn after Edie throws him out.

Bree clashes with Alex's mother for their sons' affections; Gaby urges Carlos to take a six-figure job, even though it means spending more time away from home; Susan turns to Lee for company while Jackson is away; Lynette catches Preston talking to Porter on the phone; and Edie grows weary of Dave, whose strange behavior hasn't abated.

Porter is arrested for starting the nightclub fire, and Lynette goes into full protection mode; Andrew and Alex let one cat out of a bag, and Bob and Lee let out another; Carlos regains his eyesight, and sees what Gaby has done for their family; M.J. isn't happy to see his dad date Katherine; and Dave begins to lose his grip.

The road to recovery begins in the deadly fire's wake. Gaby and Carlos' injuries lead to a fortunate discovery, but others aren't so lucky: Lynette and Tom vow to protect son Porter at any cost, and Susan must learn to let go of the man she loves. Meanwhile, Orson's attempt at a good night's sleep puts Bree in a precarious (if amusing) position just prior her big cooking demonstration.

A fire erupts at the club where the garage band is playing; Julie Mayer returns with a surprise; Lynette learns about Porter and Anne Schilling; Gaby and Mrs. Hildebrand arrive at a fragile truce; Dave keeps avoiding Dr. Heller.

Lynette and Tom learn an unsettling truth about Porter; Gaby suspects that Carlos' top client has ulterior motives; Mrs. McCluskey's sister unearths a disturbing fact about Dave; Bree's moment of weakness could bring her great embarrassment; Katherine's not-so-little secret is revealed; and Susan learns of Jackson's true passion.

Lynette suspects that Tom is having an affair; Susan tries to surprise Jackson; Mrs. McCluskey enlists her sister (Lily Tomlin) to dig up dirt on Dave; one of Carlos' clients makes him an offer; and the bond grows between Bree and Katherine.

Dave persuades Susan to throw a 70th-birthday party for Mrs. McCluskey, but his motives aren't entirely altruistic and Mrs. McCluskey isn't overjoyed; Jackson wants to ramp things up with Susan; Gaby fears she might be pregnant again; and Tom tells Lynette that he has sold the pizzeria. Meanwhile, events of the past five years come more clearly into focus. Among them: how the bond between Bree and Katherine developed.

Bree's success evokes jealousy on Wisteria Lane; Lynette, who misses using her business expertise, offers Bree unsolicited marketing advice; Mike feels as though he's not a part of MJ's life while Susan teaches their reluctant young son how to fall; and Gaby wants Carlos to be more amorous. Meanwhile, Dave's real reason for moving to Wisteria Lane begins to come into focus.

Danielle Van De Kamp is met with criticism when she returns to Wisteria Lane; Gaby and Susan get in a catfight following an altercation between their kids; Tom and Dave form a garage band after Lynette told Tom to get rid of his old things; and Katherine and Mrs. McCluskey invite Edie to lunch to press her for more information on Dave.

Gaby tries to salvage what's left of her social stature; Lynette discovers Porter's softer side; the men in Susan's life meet; Bree must juggle marriage and career; Edie once again sees just how hostile Wisteria Lane residents can be; and Mrs. McCluskey enlists Katherine's help in digging up info on new neighbor Dave.

It's five years later as the fifth-season opens, and Susan is trying to hide her relationship with a new man. Meanwhile, Gaby questions her maternal skills; Bree is about to publish a cookbook as her business partner, Katherine, bristles; Lynette catches her teenage twins (Charlie and Max Carver) spearheading illegal activities; and Edie returns to Wisteria Lane with a new man in town.