What to Watch Tonight: The Vampire Diaries Says Goodbye to Jeremy, The Slap Debuts on NBC, and NPH Goes Inside the Actor's Studio

What to watch on Thursday, February 12...

7:30pm, Cartoon Network
Adventure Time
"The Mountain" sends Finn and the Earl of Lemongrab on a voyage through the Mountain of Matthew in search of enlightenment, wonder, and those little googly-eyed boulder souvenirs.

MINISERIES PREMIERE, 8pm, NBC
The Slap
In this remake of an Australian miniseries, someone thwops a bratty kid in the kisser and starts a chain reaction of recrimination, family infighting, and middle-class ennui. Peter Sarsgaard, Uma Thurman, Zachary Quinto, and Thandie Newton star.

8pm, Bravo
Inside the Actors Studio
Neil Patrick Harris holds court about his career as an actor, writer, director, perennial host of event programming, raconteur, and heck, probably rakish gentleman thief.

8pm, The CW
The Vampire Diaries
Jeremy bids adieu to Mystic Falls in "Stay," and in accordance with town tradition his going-away will be celebrated with stabbings. (This is also how Mystic Falls celebrates arrivals, anniversaries, and Thursdays.) Elsewhere, Damon helps Liz investigate an open case involving Ma and Pa Gilbert, while Enzo lays a trap for Matt and Sarah.

8pm, ABC
Grey's Anatomy
April and Jackson have an agonizing decision to make in "All I Could Do Was Cry." Meanwhile, Catherine runs into Richard at the hospital, Amelia offers Stephanie less carrot and more stick, and Meredith plans to visit Derek, if only she can find someone to take the tykes off her hands.

8:30pm, CBS
Mom
Good news, everyone! Christy's hard work has earned her a promotion to restaurant manager in "Benito Poppins and a Warm Pumpkin"! Ehh whaaa? Being in charge isn't all it's cracked up to be? New responsibilities and new problems? And Bonnie meanwhile squares off with an enemy in the building? Bad news, everyone!

SEASON 4 FINALE, 9pm, Lifetime
Project Runway All Stars
The finalists' final collections must represent the year's four seasons: fall, spring, summer, and that dry spell in late August when the cable shows have mostly wrapped up but the network shows are still a couple of weeks away.

9pm, The CW
Reign
Mary and Francis enter Law & Order: Royal Victims Unit mode as they investigate King Henry's poisoning in "The End of Mourning." Catherine remains squarely in CW show terrain when the return of the Duke of Guise draws her into a love triangle.

9pm, NBC
The Blacklist
A CIA agent is agent-napped by Uzbekistani separatists in "Ruslan Denisov," pitting the task force against an abduction specialist.

9pm, ABC
Scandal
Hey, speaking of abductions, Olivia finally gains a march on her captors in "Full Circle." But can she maintain her newfound advantage? Elsewhere, Jake, Huck, and Quinn seek the help of an old comrade, and Cyrus steps in when Fitz hits a breaking point.

9pm, Fox
Backstrom
The team investigates the murder of a drag queen and prominent local LGBT leader, and Backstrom's tenant Gregory emerges as a potential suspect. Meanwhile in "I Am a Bird Now," the Civilian Oversight Committee led by Amy looks into Backstrom's shooting of a suspect in a prior case. Oh, Backstrom. Is there no end to the wacky misfortunes that befall people who enter your orbit?

SERIES FINALE, 10pm, Sundance
Babylon
Turmoil rages on London's streets in the wake of ARV's unauthorized actions, while a change in the wind prompts Liz to back a new candidate for commission.

10pm, ABC
How to Get Away With Murder
In "She's a Murderer," Team Annalise is flabbergasted by the newest development in Sam's case. Could it be that, in a surprise ABC crossover, Sam has come back to life thanks to whatever mojo is at work on Resurrection? Probably not, but have your #ZombieSam hashtags at the ready just in case.

10pm, Pivot
Fortitude
While he and Frank head up the coast in pursuit of a suspect, Dan struggles with his feelings for Elena.

10pm, NBC
Allegiance
Alex is this close to revealing his parents' true identities in "Teamwork," before Katya saves their bacon with some good old-fashioned misdirection. Can we all agree this show should become a Get Smart-style broad comedy where every week Alex nearly exposes his parents as spies and every week they come up with some zany new trick to foil him at the last minute?

10pm, IFC
Portlandia
The Dollar Store has big plans for Quinn in a rebranding campaign in "Fashion." In less respectable commerce, Spyke faces the music for hawking unlicensed Simpsons paraphernalia. Matt Groening and Oscar the Grouch are among the episode's guest stars.

10pm, FX
Archer
Archer takes cares of baby AJ for the weekend in "Sitting," but his attempts at responsible fatherhood are confounded by a Pakistani intelligence officer. See, who needs the Bravermans? Archer's got your grounded, relatable Thursday-night family drama needs covered.

10pm, CBS
Elementary
"The Female of the Species" once more pits Watson against Elana March, the crime boss she helped take down. Elsewhere, Holmes and Det. Bell probe a robbery at the zoo. Is this The Case of the Catnapped Cougar? The Puzzle of the Purloined Penguin? The Adventure of the Absconded Aardvark? Tune in to find out!

LATE-NITE:
– TBD on The Nightly Show With Larry Wilmore, 11:30pm, Comedy Central
– Colin Firth, Jack McBrayer & Triumph the Insult Comic Dog, and The Weekend on The Tonight Show Starring Jimmy Fallon, 11:35pm, NBC
– Tom Hanks and Sturgill Simpson on Late Show with David Letterman, 11:35pm, CBS
– Keira Knightley and Incubus on Jimmy Kimmel Live, 11:35pm, ABC
– Kevin Costner, Portia de Rossi, and David Frei with Westminster Dogs on Late Night with Seth Meyers, 12:35am, NBC
– Child genius Ryan Xie and guest host Wayne Brady on The Late Late Show, 12:37am, CBS

WHAT ARE YOU WATCHING TONIGHT?