The remaining teams continue on the seventh leg of The Amazing Race 19.

Bart's science fair project, a mechanical baby seal, outshines Lisa's brainy asteroid model and becomes a popular pet among the retirement home patrons.

Henry convinces Mary Margaret to read to the John Doe patient, insisting that he's her Prince Charming. Mary Margaret reluctantly does so, but is surprised by the results. Meanwhile, in flashback Prince Charming and Snow White meet for the first time... and possibly the last.

After discovering that his rival classmate Joel Zadak has a girlfriend, Allen Gregory sparks a sex tape scandal with Principal Gottlieb.

With their father hospitalised for testicular cancer, the Fitzpatrick children compete to prove their love -鼪 and get the old man-é¼-äós cash. Elaine reveals a big secret. Dot takes extreme measures to secure her position.

Questions about courting another wife and jealousy are fielded by the Browns when a couple from their church pay a visit.

Roger becomes Steve's legal guardian, but gets a little overzealous in the parenting department when he gets the principal fired. After getting beat up by the other teachers at the school, Steve decides to run away. Meanwhile, Stan and Francine attempt to make waves after discovering that their vacation at the biggest water park in the world fails to get their hearts pumping.

Bree is shocked to learn who dug up Gabrielle's stepfather, and Lynette lies to Penny about Tom's new girlfriend. In the meantime, Susan tries to improve her art and impress her teacher, and Gabrielle and Carlos try to change Bob and Lee's opinion of their daughters.

Ryan Reynolds pays a visit to Quahog and becomes obsessed with Peter.
Meanwhile, Stewie (MacFarlane) tries to be a big boy and steals the family car for a joy ride but lands in a bit of trouble.

Dexter is caught up in a very personal case that awakens the needs of his Dark Passenger; Debra feels overwhelmed by her new Lieutenant duties, made all the more complicated when she finds out Quinn slept with a witness in the Doomsday case.

Alicia worries that she will break confidentiality when the Treasury Department forces her to report on her latest client, while Peter reluctantly digs into Will's past transgressions.

Margaret has a family reunion; Owen gets even with a rival; Van Alden recognizes the hierarchy of the law; Jimmy wonders how a decision will affect the future.

Bo is happy for the distraction provided by an assembly of strippers that helps break an accused cop-killer out of the police station. While Bo goes undercover at a strip joint to follow the trail of one of the apparent accomplices, Dyson and Hale simultaneously track the murderer. Both investigations meet in the middle at The Hand of Glory - a disembodied hand with remarkable powers.

Coming off The Morrigan's shocking revelation about Lauren, Bo and the doctor have a difficult conversation.

A high stakes poker game is disrupted by a masked assassin, leaving one player dead and the CSIs baffled.

Team Dominator warns people about a violent storm; Sean Casey tries Team TIV's patience.

When Ray's shoebox of cash turns up missing, he confronts his primary suspect: Lenore. Ray's search for the missing cash leads him to a new client named Kayla, and Sandee presents Tanya with an opportunity to expand her business.

Shane makes a deadly sacrifice which leads to unusual behavior and self-distancing. The rest of the group tries to hang on somewhere between living to die and dying to live.

Sparks fly between Laura and a sailor on a special - and unusually wild - Pan Am flight bringing servicemen home, leading Laura to realize what she's really looking for in a man, as well as opening her eyes to the malicious racial climate in the country.

Reeling after losing key players in Nazir's plot against America, the CIA orders polygraphs on everyone who came in contact with them, including Brody, which Carrie sees as an opportunity to finally learn the truth.

The year is 1865 and after his wife is killed, Cullen Bohannon, a former Confederate solider decides to enact revenge on a group of corrupted Union officials. However, to do so, he will have to work and travel with the construction unit of the transcontinental railroad.

Ben senses a conflict of interest when Nancy sets CRISP up with a manufacturer named Yosi. Determined to bring some spice to Biscuit, Rachel disregards her boss and pursues an edgy lead.

Master Chief's face is revealed; life for Frankenberry is examined; Princess Toadstool's parents meet Mario; and Scarecrow navigates life in prison.

Victoria Coren presents the first semi-final of the 2011 tournament, which sees a trio of history enthusiasts take on three fans of The Times' Listener crossword. Clues in need of linking include a painting by Vermeer and a famous sporting trophy.

It's Richie's birthday and new boyfriend Dave has special plans. The trouble is that Alice has her own (more special) plans... as does their unborn baby.

The Inbetweeners' Greg Davies accepts hosting duties, while ex-Mock the Week panellist Frankie Boyle joins Noel Fielding in the captains' chairs. Completing the line-up are The Only Way Is Essex star Amy Childs, chart-topper Tinchy Stryder, Ian 'H' Watkins from Steps and comedian Holly Walsh.

Destiny finds a knock-out strategy to win her dream man - John Terry's dog. Recruited by a secret society of bloodthirsty foxes, it's time for Nelson to kill or be killed. Marion is entranced by a peculiarly knowledgeable goldfish.

With Destiny on heat and trapped inside the pub by sex-crazed zombie dogs, Nelson has a once-in-a-lifetime chance to woo her. Marion's night in is ruined when Vince reveals he's a karaoke hog. And after a rickshaw driver runs over her dinner, Kali seeks explosive revenge.