A pantry hunt pits the winners from the previous challenge against one another to match the most ingredients in the time allotted. Later, the 10 remaining contestants team up in pairs to complete an elaborate sushi dish.

Dr. Wells' former protégée, Hartley Rathaway, returns to seek revenge on his mentor after being affected by the particle accelerator explosion. Now able to manipulate sound waves, the brilliant Rathaway is a dangerous threat to both Wells and The Flash. Meanwhile, Iris is thrilled when she's hired by the Central City Picture News as their newest cub reporter. Unfortunately, her editor pairs her with a veteran reporter, Mason Bridge, who wants nothing to do with her. Cisco recalls his first day on the job at S.T.A.R. Labs when he met Hartley and Caitlin. Joe asks Eddie for a favor but asks him to keep it a secret from Barry.

Leslie and Ben suspect that Gryzzl is invading the privacy of Pawnee residents. April addresses the new Parks and Rec interns, while Tom helps Andy renegotiate a contract.

Suspecting that Alison/"A" is out to frame her for Mona's murder, Hanna is not willing to just sit by and let it happen. When Caleb and her friends try to come up with a safe plan to get Hanna off the hook, it isn't good enough for her. Taking her fate into her own hands, Hanna strikes out alone to clear her name.

Meanwhile, relationships are tested when Aria comes clean to Ezra and Spencer's shady actions continue to put Toby in a bind at work.

Leslie holds a rally in an attempt to keep JJ's Diner from closing. Tom surprises Donna with the ultimate pre-wedding gift.

Annie realizes that Jake needs more groomsmen to match her nine bridesmaids and makes a concerted effort to reunite Jake with his long lost friends. Once "The Boyz" are back in their lives however, Annie finds herself competing with them over who knows Jake the best. She also learns that Daniel may be the real reason behind Jake's falling out with his friends. Meanwhile, Gil persuades Dennah to join him in his newest business venture - diet shakes.

Despite the SSR manhunt, Howard smuggles himself into New York City and asks Peggy to steal back one of his inventions from the SSR lab. However, Peggy soon discovers that Howard has an ulterior motive. Meanwhile, Daniel tries to track down the mysterious blonde woman, while Dottie reveals an unexpected side to her personality.

Johnny and Moira, feeling like they have failed as parents, try to get to know their grown children. Alexis spies on Mutt and thinks he's having an affair with the Mayor's wife.

Benny walks in on Hanna and Michael kissing in Hanna's room, and reacts in a less-than-considerate manner.

Sam is scanning the internet for suspicious paranormal activity and comes across a video of Charlie beating up a district attorney. Dean suspects she's back from Oz and hunting on her own, assuming the district attorney must have been a demon. When they do find Charlie, they are shocked when she tells them why she really came back from Oz.

Bay feels pressured to maximize her short time with Emmett when he comes for a surprise visit. Daphne is mortified when she does poorly on her midterm exam. Melody and John clash when John encourages Travis to try out for the UMKC baseball team. Meanwhile, Kathryn asks Toby to help out with her new project.

The remaining 14 artists take part in a deadly predator challenge featuring guest judge Josh Hutcherson ("The Hunger Games").

Tickle's loyalty is tested as he risks it all to stay true to his old partner, Tim. Josh and Bill decide to make one last run in the woods but soon discover that they're not alone. Mark and Digger's season is in danger after their bootleg deal backfires.

With the help of Andy, Will gets music mogul Johnny Idalis to listen to a new song he wrote, however Johnny isn't impressed with the hook. Meanwhile, Marcus grows upset and frustrated with Chris and Fiona's growing relationship and flees to crash with Will, who is left struggling to juggle writing a catchy hook and the complications of his new roommate.

Morning assembly reveals the Xavier staff in rough shape. Last night's staff party went late and got messy.

The auctions begin in Upland, CA., but Dan and Laura take the buyers on a wild ride to finish out the day. Ivy ends up with an eyeful and Mary buys early in hopes of treasure. Jarrod and Brandi along with Darrell and Brandon are forced to go deep into the high mountains for the hope of staying above water.

Brody panics when Jenny invites the cultured and sophisticated Mansfield over to their zero bedroom, half bathroom 'palace' for dinner to thank him for paying for college. Harvard and Lindsay are the perfect couple who never, ever fight. That is until all their pent up tension explodes in the middle of Jenny's dinner party. When Threepeat gets his 15 minutes of fame as a financial correspondent, he freezes up until he gets a little on camera help from former childstar Derrick.

After saving a landlord with a nut allergy, Johnny finds the perfect apartment to share with Theresa; Brian tries to understand his relationship with Voodoo.

Abby gets offered to write a Huffington Post article about her dating experiences as a divorced woman and must go on ten dates in two days. Delia is fearful that her affair with Gordon Beech will become public knowledge and get her disbarred.

The CSI team investigates a death involving a vintage Rolls Royce and a chrome-covered victim.

Jules and Grayson are determined to make it to their reservation at the hottest restaurant in town; Andy has trouble with a costume he rented for Stan's birthday; Ellie starts ghost-tweeting for Laurie and gets lost in a new identity.

Raylan's investigation brings him into conflict with a paramilitary outfit, while Boyd and his partners try to salvage a profit from their heist.

Tony's attempts at playing three women backfires with them sharing a home; Violetta's conflict with Madison turns physical.

Johnny has an encounter with an overly grateful patient; Brian agrees to escort an injured girl to her prom.

Liz leaves town to grow out her bangs and has an adventure with some gold miners in the mountains; George and Gil prank a trucker on the road; an experiment goes awry for Wendy.

Jill Leovy

Conan O'Brien was joined by Rainn Wilson, Lucy Hale and Brian Scolaro.

Larry talks about the Disneyland measles epidemic and the fight against vaccines with panelists Holly Phillips, Judy Gold, Zoey O'Toole and Mike Yard.

David Letterman was joined by Andrew Luck and Oscar Isaac, plus music from Drenge.

Jim Norton, John Roy and Kurt Braunohler compete to determine who has the funniest take on the day's pop culture.

Host: Regis Philbin; Guests: David Letterman, Martha Stewart, and Tracy Wolfson

After new a novel by deceased crime-writer George Summersbee is discovered at the Luxton Deeping Crime Festival it ends up being stolen and a woman is fatally electrocuted by a booby-trapped roulette wheel.

Wolsey attempts to convince Cromwell to find a way to get close to Anne Boleyn as she is the person who could persuade the King to restore him. The King begins to take notice of Cromwell and admires his loyalty to the cardinal.