The X Factor, 8-10 p.m. on FOX: Season 2’s boot camp continues.
Survivor: Philippines, 8-9 p.m. on CBS: Another Season 25 castaway is voted out of the game.
SERIES PREMIERE! Arrow, 8-9 p.m. on The CW: In the pilot episode of this new superhero series, billionaire playboy Oliver Queen (Stephen Amell) is discovered alive on a remote island in the Pacific five years after he was thought to have died in a shipwreck. Back in Starling City, Oliver slowly reconnects with those closest to him and secretly creates the persona of Arrow — a vigilante — to right the wrongs of his family and fight the ills of society. [WATCH THE PREVIEW]
Supernatural, 9-10 p.m. on The CW: Sam (Jared Padalecki) and Dean (Jensen Ackles) take Kevin’s (guest star Osric Chau) strong-willed mother (guest star Lauren Tom) on their quest to find the tablet in “What’s Up, Tiger Mommy?”
Modern Family, 9-9:30 and 9:30-10 p.m. on ABC: Phil (Ty Burrell) and Claire (Julie Bowen) drop Haley (Sarah Hyland) off at college in “Schooled,” and Phil goes in for a vasectomy in “Snip.”
SERIES PREMIERE! Nashville, 10-11 p.m. on ABC: In the pilot of this new series about two country music stars — an aging icon (Connie Britton’s Rayna Jaymes) and a young, massively popular artist (Hayden Panettiere’s Juliette Barnes) — Rayna learns that her record label wants her to tour with Juliette as the breakout star’s opening act. [WATCH THE PREVIEW]
SERIES PREMIERE! Chicago Fire, 10-11 p.m. on NBC: In this new series from Law & Order creator Dick Wolf, the firefighters, rescue squad, and paramedics of Chicago Firehouse 51 put their lives on the line. Jesse Spencer’s Lt. Matthew Casey butts heads with Taylor Kinney’s Kelly Severide over a fallen team member in the premiere.
PREMIERE! The Vampire Diaries, 8-9 p.m. on The CW: In the Season 4 premiere, “Growing Pains,” Stefan (Paul Wesley) and Bonnie (Kat Graham) attempt to change Elena’s (Nina Dobrev) fate when she awakens to find that she died with vampire blood in her system. Meanwhile, Damon (Ian Somerhalder) takes out his frustration and rage on Matt (Zach Roerig), and Pastor Young (guest star Michael Reilly Burke) and the Town Council members begin rounding up the vampires and their supporters. [WATCH THE PREVIEW]
SERIES PREMIERE! Beauty and the Beast, 9-10 p.m. on The CW: In the pilot episode of this series about a dangerous relationship, police officer Cat Chandler (Kristin Kreuk) investigates a case that leads her to the man who saved her as a teenager — Vincent Keller (Jay Ryan), a doctor who becomes a terrifying beast when enraged. Instead of being afraid, however, Cat is touched by — and powerfully drawn to — the person who lives within the Beast. [WATCH THE PREVIEW]
Last Resort, 8-9 p.m. on ABC: In “Eight Bells,” Marcus (Andre Braugher) leads a search for three missing crew members of the Colorado — a search that leads them to Serrat's (Sahr Ngaujah) compound, where they receive an ominous demand.
2012 Vice Presidential Debate, 9-11 p.m. on multiple channels: Vice President Joe Biden (D) and Paul Ryan (R-Wis.) debate domestic and foreign issues.
The X Factor, 8-9 p.m. on FOX: The judge’s house rounds kick off.
30 Rock, 8-8:30 p.m. on NBC: Political satire at TGS drives a wedge between Liz (Tina Fey) and Jack (Alec Baldwin).
Up All Night, 8:30-9 p.m. on NBC: Chris (Will Arnett) and Ava (Maya Rudolph) go to a party with Chris’s irritating college roommate in “Jerry Duty.”
Project Runway, 9-10:30 p.m. on Lifetime: Season 10’s remaining fashion designers continue to compete for the $100,000 grand prize.
Jersey Shore, 10 p.m.-midnight on MTV: The final season continues.
PREMIERE! It’s Always Sunny in Philadelphia, 10-10:30 p.m. on FX: In the Season 8 premiere, “Pop-Pop: The Final Solution,” Dennis (Glenn Howerton) and Dee (Kaitlin Olson) make a life-or-death decision about their ailing grandfather, who used to be a Nazi.
PREMIERE! The League, 10:30-11 p.m. on FX: In the Season 4 premiere, “Training Camp,” Kevin (Stephen Rannazzisi) and Jenny (Katie Aselton) prepare for the arrival of their baby, and Taco (Jonathan Lajoie) scores an invite to the Dallas Cowboys’ training camp.
CSI: NY, 8-9 p.m. on CBS:Evidence found in photos at a crime scene on the Brooklyn Bridge send Mac (Gary Sinise) and Jo (Sela Ward) to San Francisco in search of a missing teenage girl in “2,918 Miles.”
Fringe, 9-10 p.m. on FOX: The Fringe team finds itself in a forest populated by a group of people dedicated to recording the history of mankind in “The Recordist.”
Grimm, 9-10 p.m. on NBC: Nick (David Giuntoli) and Hank (Russell Hornsby) investigate a gruesome murder in “The Bottle Imp.”
666 Park Avenue, 10-11 p.m. on ABC: Gavin (Terry O’Quinn) begins to groom Henry (Dave Annable) for a possible career change in “The Dead Don’t Stay Dead.”
Amazing Race, 8:30-9:30 p.m. on CBS: Eleven teams travel the world on a global adventure. This week, the race hits Bangil, Indonesia.
The Good Wife, 9:30-10:30 p.m. on CBS:Alicia (Julianna Margulies) and Will (Josh Charles) represent a start-up in “Two Girls, One Code.”
PREMIERE! The Walking Dead, 9-10 p.m. on AMC: Season 3 opens with the all-new "Seed."
Dexter, 9-10 p.m. on Showtime: Dexter (Michael C. Hall) tries to recruit Deb’s (Jennifer Carpenter) help with a new target, and LaGuerta (Lauren Velez) works to reopen the Bay Harbor Butcher case in “Buck the System.”
Homeland, 10-11 p.m. on Showtime: Carrie (Claire Danes) believes she’ll rejoin the CIA, and Brody (Damian Lewis) discovers that the bomb maker is in imminent danger of being caught in “State of Independence.”
Boardwalk Empire, 9-10 p.m. on HBO: Nucky (Steve Buscemi) has a tense meeting with Rothstein (Michael Stuhlbarg) in “You’d Be Surprised.”
Treme, 10-11 p.m. on HBO: L.P. (Chris Coy) continues to dig deeper into his investigation of police cover-ups and corruption post-Katrina in “The Greatest Love.”
The Voice, 8-9 p.m. on NBC: The battle round continues.
Hart of Dixie, 8-9 p.m. on The CW: Zoe (Rachel Bilson) tries to stay away from Wade (Wilson Bethel), and Wade convinces George (Scott Porter) to start playing the field in “Always on My Mind.”
SPECIAL! Dr. Horrible’s Sing-Along Blog, 9-10 p.m. on The CW: Joss Whedon’s online musical ─ starring Neil Patrick Harris as Billy, a.k.a. Dr. Horrible, a budding super villain with plans for world domination ─ makes it TV debut. The only thing standing in Billy’s way is his superhero arch nemesis, Nathan Fillion’s Captain Hammer.
NCIS, 8-9 p.m. on CBS: While on medical leave, Ducky (David McCallum) orders the exhumation of a Navy commander’s body to reexamine a closed case from 12 years ago in “Phoenix.”
Ben and Kate, 8:30-9 p.m. on FOX: Ben (Nat Faxon) and Kate (Dakota Johnson) set out to complete a scavenger hunt their dad created 15 years earlier in “The Fox Hunt.”
New Girl, 8-8:30 and 9-9:30 p.m. on FOX: Jess (Zooey Deschanel) and Schmidt (Max Greenfield) try to befriend their new 20-something neighbors in “Neighbors.”
The Mindy Project, 9:30-10 p.m. on FOX: Mindy (Mindy Kaling) connects with the lawyer for the New York Knicks in "In the Club."
Sons of Anarchy, 10-11:00 p.m. on FX: SAMCRO explores new business opportunities in “Orca Shrugged.”
The Voice, 8-10 p.m. on NBC: The battle round begins! In a twist, the coaches can steal a losing artist from an opposing team.
Revolution, 10-11 p.m. on NBC: Charlie (Tracy Spiridakos) and Nora (Daniella Alonso) rescue Miles (Billy Burke) from the militia before setting out to reunite with Aaron (Zak Orth) and Maggie (Anna Lise Phillips) in “Lowell, Indiana.”
PREMIERE! 90210, 8-9 p.m. on The CW: Naomi (AnnaLynne McCord) and Max (Josh Zuckerman) get arrested; Liam (Matt Lanter) puts The Offshore up for sale; Silver (Jessica Stroup) asks Teddy (Trevor Donovan) to father her baby; and Annie (Shenae Grimes) tells Adrianna (Jessica Lowndes) about Dixon’s (Tristan Wilds) accident in the Season 5 premiere, “Til Death Do Us Part.” Lori Loughlin and Carly Rae Jepsen guest star.
PREMIERE! Gossip Girl, 9-10 p.m. on The CW: In the premiere of Gossip Girl’s sixth and final season, “Gone Maybe Gone,” Chuck (Ed Westwick) and Blair (Leighton Meester) make a promise to each other about their relationship; Dan (Penn Badgley) works on a scathing tell-all book; Nate (Chace Crawford) is ready to go up against Gossip Girl; and the gang tracks down a missing Serena (Blake Lively). [WATCH THE PREVIEW]
How I Met Your Mother, 8-8:30 p.m on CBS:When Lily (Alyson Hannigan) and Marshall (Jason Segel) have trouble finding a nanny in the all-new “Nannies,” they learn it’s because of an elaborate scheme Barney (Neil Patrick Harris) came up with to meet girls.
Castle, 10-11 p.m. on ABC: When a young woman is mysteriously murdered, Beckett (Stana Katic) and Castle (Nathan Fillion) discover her death may be linked to a repossessed storage unit up for auction in“Secret’s Safe With Me.” [WATCH THE PREVIEW]