Nikita, 8-9 p.m. on The CW: When it looks like Percy’s (Xander Berkeley) nuclear weapons plan is getting out of control in “Dead Drop,” Ryan (guest star Noah Bean) suggests they go to the Director of the CIA, Morgan Kendrick (guest star Brian Howe), for help. Nikita (Maggie Q) is vehemently opposed to the plan and is surprised when Michael (Shane West) takes Ryan’s side. Meanwhile, Percy’s men shoot Sean (Dillon Casey), shaking Alex (Lyndsy Fonseca) to the core. Supernatural, 9-10 p.m. on The CW: Meg (guest star Rachel Miner) tells Dean (Jensen Ackles) and Sam (Jared Padalecki) that Castiel (guest star Misha Collins) is awake and talking. Meanwhile, a teenager named Kevin (guest star Osric Chau) gets hit by a bolt of lightning and is turned into a reluctant prophet; believing he holds the key to defeating the Leviathans, Sam and Dean fight off two Archangels who want him for their own purposes in “Reading Is Fundamental.”
Grimm, 9-10 p.m. on NBC: Nick (David Giuntoli) and Hank (Russell Hornsby) investigate the mysterious death of a wealthy matriarch, and Juliette (Bitsie Tulloch) does some digging into the mysterious death of Nick’s parents in an effort to help him find closure in “Happily Ever Aftermath.”
Castle, 10-11 p.m. on ABC: When Castle (Nathan Fillion) and Beckett (Stana Katic) investigate the murder of a man with human bite marks on his body in “Undead Again,” Castle's wild theories start flying. But none are as wild as what their only witness insists happened — a Zombie attack. As the evidence pointing towards an undead assailant piles up, the team plunges into New York's Zombie subculture to find the killer and bring him in — dead, undead, or alive. [WATCH THE PREVIEW]
Bones, 8-9 p.m. on FOX: When a corpse turns up in the woods in “The Family in the Feud,” the Jeffersonian team connects it to a 100-year-old feud between two families. Meanwhile, Brennan’s (Emily Deschanel) dad offers to babysit his granddaughter. [WATCH THE PREVIEW]
How I Met Your Mother, 8-8:30 p.m. on CBS: When Lily (Alyson Hannigan) and Marshall (Jason Segel) have a baby shower in “Good Crazy,” Marshall starts to panic upon realizing the baby is coming soon. Meanwhile, Ted (Josh Radnor) and Robin (Cobie Smulders) come to terms with their relationship, and Barney (Neil Patrick Harris) takes Marshall on a road trip.
2 Broke Girls, 8:30-9 p.m. on CBS: Max’s (Kat Dennings) babysitting gig with Peach (Brooke Lyons) is on the line if the cupcakes she and Caroline (Beth Behrs) deliver to Peach’s socialite friend aren’t perfect in “And the Big Buttercream Breakthrough.”
Gossip Girl, 8-9 p.m. on The CW: Chuck (Ed Westwick), Nate (Chace Crawford), Blair (Leighton Meester), Serena (Blake Lively), and Lola (guest star Ella Rae Peck) team up to uncover what they think is an explosive secret between Diana (Elizabeth Hurley) and Jack (guest star Desmond Harrington) in “Raiders of the Lost Art.” [WATCH THE PREVIEW]
Hart of Dixie, 9-10 p.m. on The CW: In “The Race & the Relationship,” Wade (Wilson Bethel) signs up for the Bluebell Battle in hopes of winning the $5,000 prize, but when he can’t find a race partner, he swallows his pride and asks Zoe (Rachel Bilson). Meanwhile, George (Scott Porter) and Lemon (Jaime King) meet with Reverend Mayfair (guest star Peter Mackenzie) to discuss their relationship issues.
The Voice, 8-10 p.m. on NBC: The remaining singers compete in the first live semifinal performance round.
Smash, 10-11 p.m. on NBC: Ivy (Megan Hilty) faces trouble as Derek (Jack Davenport) finds himself drawn ever closer to Rebecca Duvall (special guest Uma Thurman), and Eileen (Anjelica Huston) faces off against Julia (Debra Messing) over the possible return of Michael Swift (Will Chase) — all in “Tech.”
Bethenny Ever After, 10-11 p.m. on Bravo: A long vacation is just what the doctor ordered for Bethenny and Jason, but the ups and downs that come with it are not. On the second leg of their trip, Jason and Bethenny find themselves on yet another boat ride from hell in “Paradise Lost.”
Hawaii Five-0, 10-11 p.m. on CBS: In “Pa Make Loa (Touch of Death),” the first episode of a two-night crossover event with NCIS: Los Angeles, Five-0 and the NCIS: Los Angeles task force team up in Hawaii when a suspect threatens to release a deadly virus.
Once Upon a Time, 8-9 p.m. on ABC: As Henry (Jared Gilmore) pleads with Emma (Jennifer Morrison) to stay in Storybrooke, Regina (Lana Parrilla) concocts a plan that could rid her of Emma forever. Meanwhile, back in the fairytale land that was, Snow White (Ginnifer Goodwin) enlists the aid of her fellow fairytale cohorts to attack the Evil Queen and save Prince Charming's (Josh Dallas) life in “An Apple Red as Blood.”
FINALE! Amazing Race 20, 8-10 p.m. on CBS: The final four teams race through Japan before traveling to Honolulu, where the winning duo takes home the $1 million grand prize.
Celebrity Apprentice, 9-11 p.m. on NBC: Donald Trump selects the final two players in “Blown Away.”
Game of Thrones, 9-10 p.m. on HBO: In “The Old Gods and the New,” Arya (Maisie Williams) gets a surprise visitor, Joffrey (Jack Gleeson) meets his subjects, and Daenerys (Emilia Clarke) takes a stand for what she believes is rightfully hers.
Veep, 10-10:30 p.m. on HBO: Selina (Julia Louis-Dreyfus) celebrates 20 years in Washington, D.C.
Girls, 10:30-11 p.m. on HBO: Adam (Adam Driver) sends Hannah (Lena Dunham) a risque text message, and Jessa (Jemima Kirke) gets distracted while babysitting in “Hannah’s Diary.”
Khloe & Lamar, 10-10:30 p.m. on E!: The youngest Kardashian sister and her NBA star husband do their thing in the latest all-new episode of this Keeping Up With the Kardashians spin-off.
Mad Men, 10-11 p.m. on AMC: Peggy (Elisabeth Moss) harbors a secret; Pete (Vincent Kartheiser) steps up for a friend; and Don (Jon Hamm) gets a surprise in “Lady Lazarus.”
The Real Housewives of New Jersey, 10-11 p.m. on Bravo: There is trouble on the high seas when the Housewives’ cruise down the Jersey coast is filled with gossip about Caroline and smack talk between Kathy and Teresa in “Third Eye Blind.”
American Idol, 8-10 p.m. on FOX: Season 11’s six remaining finalists perform.
America’s Next Top Model: British Invasion, 9-10 p.m. on The CW: In Week 9, the final six women head to Macau, where they get a reading from an astrologer and are challenged to re-create their auras through fashion and beauty. At the photo shoot, the models pose in silk gowns... accessorized with silkworms. Kelly Cutrone and Nigel Barker join Tyra Banks and guest judge Barney Cheng on the judges’ panel. [WATCH THE PREVIEW]
Suburgatory, 8:30-9 p.m. on ABC: As George (Jeremy Sisto) and Eden's (Alicia Silverstone) relationship gets serious, he decides to introduce her to Tessa (Jane Levy), who is preoccupied with her job at Crystal Cup of Crystals in “Hear No Evil.”
Modern Family, 9-9:30 p.m. on ABC: The Dunphys are in the market for a new car and Phil (Ty Burrell) makes a spontaneous purchase without Claire (Julie Bowen). Meanwhile, Jay (Ed O’Neill) is determined to get to his high school reunion with Gloria (Sofia Vergara) and Manny (Rico Rodriguez) in tow, and Lily (Aubrey Anderson-Emmons) loses her favorite stuffed animal on a public metro train, leaving Mitch (Jesse Tyler Ferguson) and Cam (Eric Stonestreet) with an inconsolable toddler in “Planes, Trains, and Cars.”
Revenge, 10-11 p.m. on ABC: Daniel’s (Josh Bowman) impending release has everyone on edge as the press grows more and more hostile, and Emily (Emily VanCamp) discovers a photo of her father — taken on the day of his death — in “Absolution.” [WATCH THE PREVIEW]
Glee, 8-9 p.m. on FOX: Rachel (Lea Michele) and Kurt (Chris Colfer) audition for NYADA, and Puck (Mark Salling) makes a big decision about his future in “Choke.” [WATCH THE PREVIEW]
New Girl, 9-9:30 p.m. on FOX: In “Backslide,” Nick (Jake Johnson) and Jess (Zooey Deschanel) run into their exes; Schmidt (Max Greenfield) deals with a delicate medical issue; and Cece (Hannah Simone) introduces Schmidt (Max Greenfield) to her grandmother.
NCIS, 8-9 p.m. on CBS: The NCIS investigation of a fire on a Navy vessel reveals evidence that elevates security at all U.S. Navy facilities worldwide. Meanwhile, DiNozzo (Michael Weatherly) and Ziva (Cote de Pablo) travel to Italy when an explosive device is found hidden on a Navy ship in “Playing With Fire.”
NCIS: Los Angeles, 9-10 p.m. on CBS: In part two of the Hawaii Five-0–NCIS: Los Angeles crossover event, “Touch of Death,” the joint NCIS: Los Angeles and Hawaii Five-0 task force travels from Hawaii to Los Angeles when the lead suspect in the case moves to the mainland — deadly virus in tow.
FINALE! The Biggest Loser, 8-9 p.m. on NBC: The winner of the $250,000 prize is crowned in the Season 13 finale, and the eliminated players return to weigh in for the $100,000 at-home prize.
The Voice, 9-10 p.m. on NBC: The remaining singers face elimination in a live results show.
The Real Housewives of Orange County, 9-10 p.m. on Bravo: Gretchen performs with the Pussycat Dolls in front of all the other housewives in Las Vegas, and Briana drops a major bombshell on Vicki in “Bombs Away.”
The L.A. Complex, 9-10 p.m. on The CW: In “Do Something,” a struggling Abby (Cassie Steele) is given the chance to make some big cash as long as she’s willing to “play the part.” Raquel (Jewel Staite) pushes to get a movie made where she can play the lead, and Alicia (Chelan Simmons) hits a party with a D-list actor (guest star Aaron Abrams). Meanwhile, after presenting an impressive demo at the studio, Tariq (Benjamin Charles Watson) gets the chance to produce a track with the infamous rapper Kaldrick King (Andra Fuller).
The Vampire Diaries, 8-9 p.m. on The CW: In the all-new “Before Sunset,” Klaus (Joseph Morgan) tries to leave town with Elena (Nina Dobrev), but finds resistance from a surprising new enemy. As events spiral out of control, Damon (Ian Somerhalder) and Stefan (Paul Wesley) enlist Tyler’s (Michael Trevino) help, and Bonnie and Jeremy (Steven R. McQueen) take a terrifying risk to make sure a difficult spell is effective. [WATCH THE PREVIEW]
The Secret Circle, 9-10 p.m. on The CW: It's prom night in Chance Harbor, and after Adam (Thomas Dekker) uncloaks a crystal hidden in the school, Blackwell (guest star Joe Lando) tells Cassie (Britt Robertson) she can use her dark magic to find it in “Prom.” [WATCH THE PREVIEW]
The Big Bang Theory, 8-8:30 on CBS: NASA reschedules Howard’s (Simon Helberg) mission, putting the wedding plans in jeopardy. Meanwhile, Leonard (Johnny Galecki) says something surprising to Penny (Kaley Cuoco) in the bedroom in “The Launch Acceleration.”
Grey’s Anatomy, 9-10 p.m. on ABC: The residents agonize over their oral boards; the doctors work on a patient who is missing one third of his skull; Julia asks Mark (Eric Dane) to start a family with her; and Catherine (Debbie Allen) tells Richard (James Pickens Jr.) one of his residents has failed — all in “Let the Bad Times Roll.”
Scandal, 10-11 p.m. on ABC: When a commercial plane crashes, killing all on board, in “Crash and Burn,” Olivia (Kerry Washington) and her team defend the pilot from media and airline accusations.
Community, 8-8:30 p.m. on NBC: The study group comes to terms with the death of a beloved classmate in “Course Listing Unavailable.”
30 Rock, 8:30-9 p.m. on NBC: In the amazingly titled “Queen of Jordan 2: The Mystery of the Phantom Pooper,” the launch of Angie Jordan's (Sherri Shepherd) new clothing line brings "Queen of Jordan" back to TGS. Meanwhile, Liz (Tina Fey) finds herself in a feud with the reality show’s youngest cast member.
The Office, 9-9:30 p.m. on NBC: When Robert (two-time Emmy winner James Spader) drunkenly shuts down a nearby branch in “Turf War,” Jim (John Krasinski) and Dwight (Rainn Wilson) join forces to outsmart a salesman from Scranton’s uglier sister city.
Parks and Recreation, 9:30-10 p.m. on NBC: While on a bus tour for the final day of her campaign, Leslie (Amy Poehler) is caught off guard when an important person in Pawnee passes away in “Bus Tour.”
Awake, 10-11 p.m. on NBC: Detectives Britten (Jason Isaacs) and Bird (Steve Harris) look into what appears to be a case of gang violence, but clues from his other reality force him to take a closer look in “Slack Water.” American Idol, 8-9 p.m. on FOX: One finalist gets the boot. Who will it be?
Touch, 9-10 p.m. on FOX: Jake’s (David Mazouz) numbers lead Martin (Kiefer Sutherland) on a mission to reunite a French woman with her biological mother and twin sister in “Zone of Exclusion.”
Don’t Be Tardy For the Wedding, 9:30-10 p.m. on Bravo: Kim Zolciak’s wedding-planning drama continues in this Real Housewives of Atlanta spin-off.