TONIGHT: After a couple slow weeks, TV is back with a vengeance! Brad returns to the Bachelor, new HIMYM, the Closer and a Lifetime movie about the Craigslist Killer. Plus, every late night show is new (except Carson Daly).

8:00 PM

How I Met Your Mother Marshall and Lily see a fertility specialist when they fear they'll never be able to have a baby; and Robin begins a new job. (CBS)
The Bachelor Brad Womack, who chose no one in his 2007 stint in the Bachelor Malibu mansion, returns for a second shot at love as Season 15 opens. But before he meets 30 new would-be brides, he's confronted by his spurned '07 finalists, Jenni Croft and DeAnna Pappas. Then the first bachelorette to emerge from the limousine slaps him. Others are friendlier (if sometimes wary) at the opening cocktail party, after which Brad culls the field to 20. (ABC)
Pretty Little Liars Hanna is taken to the hospital in the wake of the hit-and-run, and her friends lean on each other and retrace everything that's happened to them since "A" entered their lives. (ABC FAM)

9:00 PM

The Closer A crack addict, a potentially shady rehab facility and a missing young woman swirl around an investigation in the Season 6 finale. Before long, Brenda's judgment comes into question and Fritz must disclose dark secrets from his past. (TNT)
My Big Friggin' Wedding Tammie goes on a wedding-day rampage, torpedoing anyone who tries to ruin her big day. Alyssa and Tyler's wedding planner has had it, and tries to sabotage their reception. (VH1)
Greek In the fourth-season opener, Casey and Evan enter law school while Ashleigh struggles with starting her career in New York City. Elsewhere, Rebecca begins her tenure as ZBZ president; and Rusty tries to get Cappie to step down as president of KT. (ABC FAM)
The Craigslist Killer Lifetime movie alert! The story of Boston University med student Philip Markoff (Jake McDorman), dubbed the Craigslist Killer for an alleged spree of attacks against women who advertised erotic services on the Web site. (LIFE)

Advertisement

10:00 PM

Castle Beckett and Castle tackle an upscale matchmaker's murder case, and they have company: the actress (Laura Prepon) cast as Nikki Heat, who wants a deeper grasp of her character. Her copycat image soon becomes too much for Beckett, but Castle likes it. (ABC)
Hawaii Five-O McGarrett's sister is kidnapped and the investigation uncovers new clues about his mother's murder, which include possible ties to the Japanese mafia. (CBS)
Men of a Certain Age Joe struggles with conflicting emotions upon discovering news about his ex-bookie (Jon Manfrellotti). Meanwhile, Terry gradually grows to recognize the benefits of working a nine-to-five post; and Owen tries to end hostility between sales and service. (TNT)
The Best Thing I Ever Ate Reinvented Classics: Classic dishes that have been reinvented are discussed by Giada De Laurentiis, Tyler Florence, Robert Irvine and Ted Allen. (FOOD)
True Life I have a Festish: Young adults with bizarre fetishes share their stories. (MTV)

Who's on the Late Night Couches Tonight?

Conan Christina Aguilera, Zachary Levi (TBS)
The Daily Show: TBA (Comedy Central)
The Colbert Report: Gov. Ed Rendell (Comedy Central)
Jimmy Kimmel Live: Patricia Heaton, Brad Womack, Josh Groban (ABC)
Lopez Tonight: Janet Jackson, Antoine Dodson, Rooney (TBS)
Chelsea Lately Josh Wolf, Margaret Cho, Ross Mathews (E!)
The Tonight Show with Jay Leno: Ron Howard, Nicole "Snooki" Polizzi, Sick Puppies (NBC)
Late Night with Jimmy Fallon: Gwyneth Paltrow, Wyatt Cenac, Jeff Musial, Best Coast (NBC)
Last Call with Carson Daly Johnny Knoxville, Nathan Barr, Off! (NBC, repeat)
Late Show with David Letterman: Brian Williams, Paula Abdul (CBS)
Late Late Show with Craig Ferguson: Lisa Kudrow, Matt Braunger (CBS)

Sponsored