Billie seeks new information about her sister's kidnapping, and goes to other magical kidnapping victims for help. Unfortunately, one of them is a demon in disguise. Also, things get worse when Billie accidentally turns her visiting parents into assassins. Elsewhere, Paige and parole officer Henry make a love connection, and Piper adjusts to Leo's absence.

The result of Marge's anger against Quimbys new toll road leads to the discovery of a frozen mailman and his 40-year-old mail. The old mail is delivered to the recipients, including one to Grampa Simpson's deceased wife, and it reveals a secret love affair and who the real father of her baby Homer might be. Confused and emotional, Homer finds Mason Fairbanks, his wealthy and much improved paternal dad, and happily establishes a father-son relationship with him while rejecting Abe, his surrogate father of 40 years, especially after a DNA test reveals that Mason is indeed his real father. Homer joins Mason on an undersea treasure hunt and when Homers life is in mortal danger he reflects upon his childhood and realizes who his true father is. When he confesses that to Abe, Abe has a confession of his own.

Food and Wine magazine writes a favorable review of one of the Nolita meals that Teddy makes but Jack takes total credit for it. This makes Teddy quit in anger, but seeing him quit and return so often, Jack decides to hire another chef, Chet. Meanwhile, Nolita is flooded with guests wanting the fish meal, and Jack soon discovers he does not know how to make it, and realizes he has to get Teddy back.

After Stan and Roger have a rough day, they get into a fight that leads to a "Freaky Friday"-type switcheroo where they get a taste of life in each other's shoes. But after the excitement of a new life stales, they face each other's problems as Roger is under pressure at work and Stan yearns to be needed. The swap gets out of hand as the family starts to crumble.

Four close high school friends each went their separate ways in 1980. Eight years later, in 1988, one of them was murdered. The homicide team receives a tip about the murder, prompting a re-investigation of the case and an examination of the friends' lives, hopes and dreams after high school.

Jordan and Woody are called to investigate a mysterious murder at a quaint bed and breakfast, it isn't long before the 100 year-old crime that made the house infamous is revealed. A sudden snow storm traps the crime fighting duo and it is hard to distinguish the facts from the legends as a local cop, the hotel caretaker, the current proprietor and several ghost chasing guests all become possible suspects.

Meanwhile, back at the morgue, old feelings resurface and Bug becomes jealous when Lily announces that she has a date.

Gabrielle kisses Tom and Lynette is not happy and drives a wedge in her friendship with Gabrielle. Paul attacks Mike. The housewives become more suspicious of Betty and her family. Andrew is trying to blackmail Bree, but Bree gets some assistance from Susan's ex, Karl.

After Brian has a near-death experience in the hospital, he decides to lead a new life. He ends up getting a nightly singing gig with Frank Sinatra Jr., but his new lifestyle doesn't last very long. Meanwhile, Meg, after joining a new after-school group, pretends to be a lesbian.

After Joseph Sabo is found lying dead in the street, Barek and Logan investigate who was nearby that night that may have had a motive. They are soon led to Danielle Quinn, who had been blackmailing six different men claiming they fathered her child. The detectives realize she was the one who killed Sabo. However, when none of her victims will testify against her for fear of their wives finding out what they've done, Barek and Logan hit a dead end.

Bette and Tina deal with parenting Angelica while attempting to rekindle their relationship and handle an obnoxious social worker. Alice has a traffic accident, Helena gets into the movie business, Carmen and Shane's relationship gets a tad more serious as Carmen takes her to meet the parents, and Jenny, recovering at her parents', has had enough with the Midwest and ponders moving back to L.A. with her new girlfriend Moira.

As the staff prepares for Leo's Vice-Presidential debate, they must deal with Internet criticism that Leo is weak and unfocused. Meanwhile, when Santos stops by his home while on the campaign trail, he and Helen must learn to cope with the new security surrounding their home as well as problems that Jorge Santos, Matt's brother, may cause them.

Granddad, following the guidance of Riley, tries to scam two reality television shows, but things don't go as planned. Meanwhile, Huey becomes convinced the government is stalking him.

DCI Sam Tyler's bad day just keeps getting worse. His case against a suspected serial killer has collapsed and his girlfriend and colleague Maya, has been kidnapped by the real killer. Worse is to come, he is knocked down by a car, when he wakes up - he appears to be in the year 1973. Confused, he's convinced he either dreaming or hallucinating and he's finding it difficult to believe all around him is real, including his new fellow officers. Sam discovers there is a link between a murder committed in 1973 and the serial killer who has kidnapped Maya - in 2006.