GLEE goes back in time to see why the original members of New Directions signed up for glee club in the first place.

AnnaBeth has a dream in which BlueBell's founder prophesies five omens that will proceed the town's demise; Wade and Zoe have different opinions on marriage; George gets a potentially life-changing offer.

Nick and Hank investigate a murder victim with his foot cut off, and stumble onto a disturbing Wesen take on the "lucky rabbit's foot". In an effort to help, Monroe and Rosalee go undercover. Meanwhile, the fallout from Adalind and Juliette's showdown still has Nick reeling and sends him on a path that leads to Henrietta.

When an excited Mandy announces she will accept her dream summer internship job to work with a top fashion designer in New York City - then suddenly claims she can't go - Mike and Vanessa want to figure out why she changed her mind.

When Juanita Canales invites the family to her granddaughter's quinceañera, Natalia wants to show off and use different aspects of the family to impress everybody. This culminates in her pushing Cristela to bring Josh from work as her date, and Cristela has the first dance she never had when she turned fifteen.

Forces come to a head when Ramse does what it takes to protect his newfound family, leaving Cole to deal with the aftermath.

As a storm closes in on Nome, tensions rise in the fleet. While the dredgers battle rough seas to get the gold, the Pomrenkes disagree about Steve's dream to go mining inland.

All of Will's hard work and dedication to the Glee Club and to fostering the talents and dreams of his students pays off in a major way, and everyone shares in the feeling of joy that permeates the school as teachers and students reflect on their shared journey. Old rifts and wounds are healed and new sights are set on a promising future. Everyone seems to be ending up exactly as expected and right where they belong... along with more than a few unexpected surprises.

A 14-year old entrepreneur from Spokane, WA, offers her product which gives pet owners a way to videochat with their animals; a New York-based entrepreneur has a hometown t-shirt that has over $1 million in sales; another New Yorker with proprietary software to manage your online and social reputation; and Barbara Corcoran gathers some of her most successful entrepreneurs for a ski getaway.

The Abbey becomes a house of horrors as Kyle struggles with his infection and Anne begins to shape a successor to Michael.

Bill's guests: NBC and MLB sportscasting legend Bob Costas. Panel: ex-US Rep. Jack Kingston (R-GA), ex-NYC Council Speaker Christine Quinn, GOP Strategist Mercedes Schlapp. Panel Guest: "God's Bankers" author Gerald Posner.

Joel McHale's special guest is Rob Huebel.

"We the People" - A recent study funded by the Department of Homeland Security listed domestic right-wing groups as two of the top three greatest terrorist threats in America. Host Gianna Toboni investigates these so-called patriots, training and taking up arms along the border.

"Countdown to Extinction" - Correspondent Isobel Yeung visits the Mozambique Channel and the Gulf of Mexico to get an idea of how much we've overfished our oceans, and what we can now do to reverse that trend.

Jeremy Piven, Ariana Grande

Trouble starts when oldest son Danny Rayburn comes home for the 45th anniversary celebration of his parents' hotel in the Florida Keys' Islamorada.

Five years after leaving the army base, Owen must re-integrate into a 'normal' life at the hospital.

The town of Borwatt has a job for Laxus in particular: to solve their neverending lightning problem... except it seems Laxus himself is responsible for the dangerous phenomenon. Can he and his Raijin-shuu partners fix things before the town's mayor smears them and all of Fairy Tail?

Satoshi befriends a Numera who is very friendly, but because it is a Dragon-type it is afraid of Dedenne.

Emma Willis and Marvin Humes present the first live round of the singing contest, in which the 12 remaining acts perform for a place in the semi-final.

Hollywood leading man Russell Crowe talks about directing and starring in The Water Diviner, Elizabeth Hurley discusses E! Entertainment's new drama The Royals, and Lily James (Downton Abbey's Lady Rose) reveals what it was like to play Cinderella in Disney's new film. Plus, funnyman David Mitchell and live music by legendary disco band Chic.

Emma Willis and Marvin Humes announce the result of the public vote to decide which four acts will be going home.