Mary's future may be resolved, but the rumor mill surrounding her situation runs rampant. While ugly rumors spread about Mary's sudden departure, Simon is persuaded to use his sister's bad reputation to boost his 'cool' quotient at school and gets into some trouble of his own with identical twin bad girls, Carol and Sue Murphy (Mary Kate and Ashley Olsen, Full House). Congregational gossip irks Eric. Lucy wrestles with high school hearsay. Ruthie spreads phony tales to draw attention away from Mary, and Matt's infatuated with a beautiful stranger. Also, Annie goes out with an old boyfriend.

Duplicate versions of Michael, Isabel and Tess come to Roswell after killing their king Zan, to urge Max to attend an important interstellar summit in New York City, but they have their own agenda; Ava stays behind in Roswell.

Andromeda is on a science mission near a black hole,Dylan is having trouble seeing a black hole again,and he decides to send a message to his long gone fiance Sara to ease his mind.But somehow Sara receives his message 300 years into the past.

Becker's car is stolen and things work out to his benefit with the insurance company; Reggie receives a very unexpected marriage proposal on her second date with a new guy.

Kimmie comes to Cage & Fish looking to hire Ally. She's suing her old firm for wrongful termination. They fired her for being too puritan, and the opposite lawyer is Larry. Now Ally and Larry have to face each other in court. Meanwhile, Ally is nervous about her first kiss with Larry and seeks for advice with Ling, who demonstrate on John how a good kiss should go. This makes Richard insecure of himself, and Nelle tells him to find a theme song for himself. John loses the case to Larry, but he and Kimmie go out on a date.

While watching over the Ironman Triathlon, J.D. and Sean must perform a rescue of two divers who have come face to face with a tiger shark. The reason the shark is so close in land is that Blake, a nefarious "shark tour" provider, had been dumping chum in the water. Sean, of course, is livid and becomes even more so when locals tell him not to interfere. Sean confronts Blake face to face, but Blake is not intimidated by Sean and even threatens him back. Unbeknownst to Sean, Kekoa and J.D. have continued their affair. They have, in fact, ramped it up to the next level, even though both know that what they are doing is dangerous and not in the best interests of the team.

After a great Thanksgiving, Doug and Carrie tries to recall their first Thanksgiving together who said, "I Love You" first. They consult Arthur who quickly recalls some other Thanksgivings and finally recalls 1993 when he was having a fight with his new wife Lily. When Doug arrives to the house to meet Carrie's family, Carrie, ashamed of her family, runs off and leaves Doug to have a dinner with each parent one at a time. Even though he physically engraves and rebuffs the bowling balls, Arthur criticizes Doug's job at IPS to be replaced by a robot in the near future. When Carrie comes back, they both express their love for each other as Arthur proclaims that her relationship with Doug will not last.

Tonight, a Daily Show special, Tales of Survival with Vance DeGeneres.

Armando asks Betty to let him have an office at Ecomoda to work on the recovery project.