Location: London, Earth Date: 7 November, 1987 Enemy: The Reapers Rose requests a trip back to the day her father, Pete Tyler, died. Reluctantly, the Doctor agrees, but he realises he has made a mistake, when Rose saves Pete from being run over by a car. This has now changed the timeline, and Reapers are transposing themselves all over the Universe. However, this time, the Doctor doesn't have a plan…

Lex is hit with a surprise after his father closes the local Smallville plant to force him back to Metropolis, blaming the plant's failure on his management. Meanwhile Clark prepares for his date with Chloe, reporter Roger Nixon gets wind of Clark's alien origins after setting up an explosion, and Whitney joins the Marine Corps.

The BAU faces one of its toughest cases when the team is called to New York City to determine if a series of random shootings is the work of one serial killer or a team of killers working together.

Fry downloads Lucy Liu's image from nappster.com onto a blank robot and falls in love with the computerized image that is programmed to love him back. His friends, who are worried about Fry, try to shut down nappster.com, and discover that the company has actually kidnapped real celebrities. They grab Lucy Liu's preserved head and try to escape, but nappster.com send an army of warrior Lucy Liu-bots after them.

After the most successful advertising campaign Springfield has ever seen, The Krusty the Clown show gets bumped in the ratings by Arthur Crandall, a droll ventriloquist, and Gabbo, his excitable dummy. Gabbo is a huge hit, and Krusty's show is cancelled as a result of falling ratings. Bart and Lisa enlist the help of Krusty's Hollywood pals like Hugh Hefner, Bette Midler, Elizabeth Taylor, the Red Hot Chili Peppers and others to save his show. After an emotional TV special, Krusty's show is brought back for good.

Mr. Burns is at death’s door and needs a blood transfusion from a donor that has the same very rare blood type that he does. Homer discovers that Bart has the same rare blood type and he sets his sights on receiving a large monetary gift from Mr. Burns, as a thank-you for Bart’s blood. Things become interesting, when the only thing the Simpson family receives, is a simple thank-you card from Mr. Burns.