Susan's mum, Sophie, pays an unannounced visit to Wisteria Lane after she and her boyfriend call it quits. Meanwhile, Gabrielle faces Carlos's wrath after he learns about the settlement, and Lynette and Bree experience a chill in their friendship after Bree babysits Lynette's kids and dares to discipline Porter.

Some unwelcome faces resurface as George Williams re-enters Bree's life, and Lynette discovers that Tom's old girlfriend has been hired at his firm. Meanwhile, Gabrielle plans a big party to bid farewell to Carlos, who's about to head off to jail, and Susan and Julie encounter less-than-neighbourly behaviour from the Young family.

George Williams continues to worm his way into Bree's life, Lynette tries to spice things up with Tom who, she fears, is losing interest, Gabrielle's latest man troubles grow even more complicated, and Susan gets a surprise visitor.

Lynette discovers that no good deed goes unpunished when she momentarily befriends mean Mrs McCluskey, and Susan, still reeling from her break-up with Mike, is mortified when her mum, also newly single—decides to jump start both their love lives.

As Carlos continues to serve his jail sentence, Gabrielle valiantly tries to free him. Meanwhile, Mike and Susan face a crisis in their relationship, and Paul Young returns.

The neighbours panic about the intruder who's on the loose on Wisteria Lane, Susan learns shocking news about her father at her mother's wedding, Bree's 'engagement' to George hits a bump, and Gabrielle learns to let go.

While Susan continues to undergo dialysis, she is stunned when her flighty mother, Sophie, along with her Aunt Claire, pays a visit but won't agree to get tested to see if she would be a potential kidney candidate.

As Jeff (Joel McHale) and Frankie (guest star Paget Brewster) look to extract Dean Pelton (Jim Rash) from his expensive virtual reality world with the help of inventor Elroy Patashnik (guest star Keith David), Britta (Gillian Jacobs) uncovers an uncomfortable truth about her parents George (guest star Martin Mull) and Deb (guest star Leslie Ann Warren) and her friends’ generosity. Danny Pudi, Alison Brie and Ken Jeong also star.

Frankie (Paget Brewster) warns the group about the recent spread of guerilla marketing at college campuses, as a former boyfriend tries to lure Britta (Gillian Jacobs) into joining Honda’s campaign. Meanwhile Jeff (Joel McHale) attempts to stop others from befriending Elroy (Keith David), as he secretly hopes to gain Elroy’s approval.

Abby's parents come to town with an unusual request. At the insistence of her daughter, Abby reaches out to Becca for a meeting. Jo goes on an online dating binge and Phoebe goes on a date with her professor.

Grace's plot to dispense of Will's father's awful mistress falls at the last hurdle, while Jack and Karen's horse-breeding scheme is doomed from the start.

Will's dad is in town. Will thinks it's him that he's visiting, but Grace sees him on the arm of a woman. She's unsure whether to tell Will and when she asks Karen for advice, Karen gets the wrong end of the stick and, thinking that it was her husband Grace suspected, sets off on his trail with Jack.

Grace is shocked when she catches Will's philandering father (Sydney Pollack) on the arm of a glamorous stranger (Lesley Ann Warren).

Responding to the pleas of his father's mistress-turned-girlfriend Tina, Will attempts to discover whether there's a new woman in his dad's life. However, when his father's new woman turns out to be his mum, Will has to find a way to break the shocking truth to Tina.

A wealthy psychiatrist murders the husband of his mistress to protect his own reputation.

At Will's father's funeral, Will has to face up to the fact his last memory of his father is not a pleasant one, and decides to make some changes in his life.

Shawn and Gus attend a party hosted by an aging rockstar named Billy Lipps, a man the SBPD arrested years ago for a murder he doesn't remember committing.