Ruthie gets detention when she is late for class after crying about Martin in the bathroom. Unexpectedly, she finds detention is a blast when the teacher in charge introduces them to the music of George Gershwin. With the music program being cut at the high school, students begin purposely landing in detention so they can discuss music.

Meanwhile, The Camdens rally to help a friend of Ruthie's, who is hiding a secret, and Rose pressures Simon to pick their wedding song. Finally, Ruthie is upset when Simon informs her that Martin is attempting to care for Sandy and the baby.

With a tsunami approaching the coast, the residents of Wilmington find themselves under a mandatory evacuation. Among the mass exodus of people leaving for safety, Miles and his family scramble to make it off the island.

Meanwhile, Laura travels to North Carolina to find Rich, who has been arrested by military police at the mysterious laboratory. As employees hurriedly vacate the building, Rich is locked up in a cell and left to die.

Travis visits the final four women's hometowns, as their families put him on the hot seat in a special two-hour edition of ABC's "The Bachelor: Paris"

After agreeing to take things slowly and not have sex for a month, Ted and Victoria decide that they have waited long enough. With Marshall and Lily out of town, the timing seems perfect. However, when the two change their plans and decide to stay home, they end up hiding in the bathroom in an effort to avoid ruining the moment for Ted. Meanwhile, Robin replaces Ted as Barney's wingman for a boy's night out.

Ivan Erwich begins the process of reconfiguring the triggering mechanisms on the nerve gas canisters with the aid of Jacob Rossler. Martha persuades her husband to go public about his Chief of Staff and they work together on a statement for the press.

Jack and Curtis infiltrate Rossler's building which leads to a difficult situation for Jack. Meanwhile, Lynn is pulled away from CTU by his troublesome sister.

Charlie arranges a romantic date with Mia in the hopes of consummating their relationship. Alan begins to date Charlie's most recent ex-girlfriend.

Pablo's past comes back to haunt him when someone comes to Raintree and tells him he has to train his horse; Meanwhile, Matt takes on a new job, which upsets Jean to no end. Isabelle stirs up more trouble, and does her best to prevent Ken and Junior from reconciling.

Though she's initially content to overhear Scott call her his girlfriend, Alex soon finds herself unnerved by the sighing sound he makes each time he takes a drink. When Bill notices this quirk of Scott's, he tries to provoke a breakup by offering Scott several tins of salty cashews to get him to drink, and sigh, as much as possible. Though Alex decides to save the relationship by simply asking him to stop making that sound, she's driven even crazier when Scott mentions that she has a few bothersome traits as well.

Doug and his pals rent an apartment to use as a secret hang-out. Meanwhile, Carrie goes to great lengths to please her newest client, Kirstie Alley.

When Horatio's nemesis, Walter Resden targets someone from their past, Horatio tries to stop him. Also Eric Delko's relationship with Natalia is tested when she thinks she may be pregnant.

The Montecito hosts a car show, and Nascar Nextel Cup Series driver Jimmie Johnson comes to Las Vegas to act as celebrity judge. During his stay, he receives plenty of attention from the ladies, Mary and Delinda, who make it clear how much they would love to go for a ride.Meanwhile, an urban legend comes to life when Danny and Mike enter one of the hotel rooms to discover a man missing a kidney lying in a bathtub full of ice.Sam's newest whale comes with a unique problem, palmar hyperhidrosis (a.k.a. sweaty palms), and to deal with him, she must teach Ed the casino host ropes.

Allison gets a minor concussion when slipping in the bathtub. When she goes to get an MRI she has a strange vision about a man she just met.

TONIGHT: Stephen Colbert welcomes California Senator Barbara Boxer!

After they arrive at school; Rinrin tells Ichigo and the others about the next game. One of them is an imposter and they must find out who it is before noon or everyone in their school will disappear.

Coming Soon...

Carl gets a job growing cannabis for the Maguire brothers, but ends up getting arrested. His problems aren't over when he's released, as his employers suspect him of being a grass. As a family feud gets under way, Mandy forbids Lip from seeing their son, so he decides to restore the peace by tracking down the real informant.