After Oliver is shot, he turns to a surprising person for help – Felicity. Diggle is stunned when he sees Felicity walk through the front door of the lair dragging a dying Oliver behind her, and the two team up to save Oliver’s life. As Oliver hovers between life and death, he flashes back to a seminal event on the island – a daring escape attempt with his new friend Slade Wilson.

Dawson attempts to help her brother Antonio unravel the details of his drugs-and-gang investigation, and goes behind his back in turning to an unlikely source for assistance. Casey and his mother, Nancy struggle with their new relationship. Meanwhile, as a favor to Lieutenant Whaley, Severide visits someone important from his past, while Herrmann and Otis learn some hard truths about their "silent partner" in the bar.

The CSIs investigate the demise of a famous Cuban singer’s sister who’s in town as part of a U.S. tour. Meanwhile, Hodges begins to get cold feet at the prospect of marrying his Italian bombshell girlfriend.

It's a day like no other at Broadhill retirement home... Derek is watching Dougie fix a table's wobbly leg until he finds a baby bird that's fallen from a tree. Derek, desperate to save the bird's life, rushes inside to announce the emergency and asks Hannah to call Rolf Harris or Bill Oddie. Later, Derek and some of the residents attend a jumble sale, and then it's date night for Tom and Hannah, but she's forgotten.

Medal of Honor recipient Staff Sgt. Clinton Romesha; from "The Carrie Diaries", actress AnnaSophia Robb; musical guest Robert DeLong. Quvenzhané Wallis preempted.

FBI Agent Dana Lewis partners with SVU when she thinks a 25-year-old rape-murder case in New York is connected to multiple unsolved cases across the country; as Lewis doggedly pursues her suspect, Benson and Amaro question his guilt.

Claire and Phil’s Valentine’s Day romp ends with Claire in the hospital; Jay and Gloria’s attempts at romance are interrupted by the kids; after hosting a wild party, Cam and Mitch are left with hangovers and a new housemate.

Rayna finds comfort in the arms of an old friend after revealing to Daphne and Maddie her plans to divorce. Juliette is invigorated by the response to her new sound and takes steps to reinvent herself -- against the guidance of her management. Things are looking up for Scarlett and Gunnar when Rayna makes an offer to sign them to her label. While their hard work begins to show signs of success, Avery struggles to find his old sound and is forced to consider an attractive offer.

Kevin deciphers the tablet and figures out how to close the gates of Hell. He tells Sam and Dean that according to the tablet one person must face a series of three tests designed by God. The first one – kill a hellhound. Sam and Dean argue over who should complete the trials.

Philip and Elizabeth discover that their murdered colleague Robert had a wife they never knew about. As they try to determine what she knows and where her allegiance lies, Stan's investigation into Robert's death puts him hot on their trail.

President Obama focuses on the middle class and infrastructure, Marc Rubio suffers from dry mouth, and Dave Grohl relives rock 'n' roll history.

Actor/comic Russell Brand; from "Girls", actress Allison Williams.

As Valentine's Day nears, killjoys Axl, Sean and Darrin offer their services to help guys who want to break up with their girlfriends. Mike's romantic text to Frankie erroneously gets sent to a co-worker. Brick has a problem with Frankie's handling of his school artwork collection. Sue gets a surprise when ex-boyfriend Matt invites her to the school's Valentine's Day dance.

Adventure awaits the chefs in a glacial-theme test. Later, a meal prepared by Emeril Lagasse and guest judge Roy Choi sets the stage for an elimination challenge.

The guys look for romance on the Web when they're alone on Valentine's Day.