What to Watch Tonight: The Mentalist's Series Finale, a Deathstroke Reunion on Arrow, and an Awkward Birthday Party on The Americans


What to watch on Wednesday, February 18...


SERIES FINALE, 8pm & 9pm, CBS
The Mentalist
"Brown Shag Carpet" finds Jane up to his old tricks, once again pretending to be a psychic in order to bait a serial killer the FBI is pursuing. Then "White Orchids" wraps the series with Lisbon and Jane deciding to tie the knot—but will a vengeance-minded killer rain on their parade?


MINISERIES CONCLUSION, 8pm, BET
The Book of Negroes
Racial tensions in Nova Scotia prompt Aminata to organize a return voyage to Africa. Once there, she sets off to find her way back to her village.


8pm, ABC
The Middle
The rest of the Hecks find out that Darrin has popped the question—and that Sue has made up her mind—in "The Answer." Meanwhile, Axl channels his new Psych 101 skills into ridding Brick of his many quirks.


8pm, The CW
Arrow
Malcolm and the Queen siblings take a lovely family vacation to Lian Yu, where they bump into their old friend Deathstroke. Oh, what spirited times all are sure to have! In flashbacks, "The Return" sees Oliver and Maseo searching for the Omega bio weapon in Starling City, where the hometown boy checks in on Laurel and Tommy.


8pm, ABC Family
Melissa & Joey
Joe is nonplussed when Mel buys Dani a piano to stoke her budding musical talent in "Face the Music." Could his displeasure have anything to do with his deep dark secret past as a member of a boy band?


8:30pm, ABC
The Goldbergs
After Murray nixes Erica's car privileges, she and Barry buy wheels of their own in the form of a ramshackle van—which only incenses Beverly further when the kids turn it into an ersatz living quarters. Elsewhere in "Van People," Adam is irked by his yearbook designation as "nicest guy."


9pm, Fox
Empire
In "Our Dancing Days," Lucious aims to position Empire Entertainment as a cozy family business, which will probably go about as well as positioning Empire as The Waltons. While the rebranding effort only ratchets up the tension between Hakeem and Jamal, Cookie continues maneuvering to seize control and Anika interferes with Elle Dallas ahead of a big performance.


9pm, The CW
The 100
Clarke has misgivings about Lexa's leadership in "Resurrection," in part because instituting "casual Fridays" seems pointless at best. Elsewhere, Abby tries to help an injured Kane, Indra keeps up the pressure on Octavia, and Cage throws Maya into a dangerous situation.


9pm, PBS
NOVA
"Petra: Lost City of Stone" explores the famous architectural wonder in present-day Jordan, a two-millennia-old city carved from stone that once flourished as a cultural and economic hub powered by marvels of engineering.


9pm, NBC
Law & Order: SVU
While working to dismantle a sex-trafficking ring in "Undercover Mother," Det. Carisi finds a surprising ally: a woman (Lili Taylor) who has infiltrated the operation posing as a madame in an effort to rescue her daughter.


9pm, ABC
Modern Family
Traveling home from a weekend with Phil's old cheerleading crew, Claire seizes a chance to fly first-class while Phil is relegated to coach. Elsewhere in "Fight or Flight," Gloria tasks Jay with teaching Manny to stand up for himself, while Mitchell, Cam, and Pepper throw Sal a belated baby shower.


9:30pm, ABC
Black-ish
Zoey introduces the family to her first real beau, "Andre From Marseille"—a sophisticated French lad who immediately gets under Andre-not-from-Marseille's skin.


10pm, Pop
Schitt's Creek
Johnny campaigns for the removal of a potentially offensive sign, while David goes job hunting and Alexis receives a surprise on her first day of community service in "Don't Worry, It's His Sister."


10pm, USA
Suits
In "Derailed," Mike's new humanitarian case could put a dent in the firm's business, because soullessness is a core value of the Pearson Specter Litt brand. Meanwhile, Jessica struggles with keeping apart from Jeff Malone, and Louis is determined to get the respect he's earned.


10pm, ABC
Nashville
Rayna sees red when Jeff intends to sign Maddie to Edgehille, while Luke, Gunnar, and Will have trouble seeing straight after a night on the town drowning their sorrows. Elsewhere in "I'm Lost Between Right and Wrong," Sadie's stalker of an ex disrupts her recording session, and a secretive Deacon keeps Maddie at arm's length.


10pm, FX
The Americans
"Dimebag" places Philip in a moral conundrum, perhaps when it finally dawns on him how many times he's taken a penny and how few times he's left a penny. At home, Paige's birthday wish isn't what her parents expected (which is a pain, since they had already picked out the deluxe My First Soviet Espionage Mission by Mattel kit for her).


10pm, VH1
Hindsight
In "The Cranberries," Georgie and Lincoln have to let Thanksgiving linger, Becca and Sean are changing every day in every possible way, and Andy asks Melanie what's in her head, in her head, zombiee-eee-eeeee.


10pm, FXX
It's Always Sunny in Philadelphia
Everyone goes their separate ways in "The Gang Misses the Boat," so that they may better know themselves as individuals. For as Socrates said, "The unexamined life is not worth living," and you simply will not find more dedicated students of the teachings of Socrates than the gang from Paddy's Pub.


10pm, NBC
Chicago P.D.
Burgess and Roman land in a sticky wicket during an investigation in "What Do You Do." While they must somehow extricate themselves from the bad guys' clutches without their guns or radios, the Intelligence crew spends the day getting taser-certified.


10pm, Comedy Central
Workaholics
The guys arrange for the office to play hooky in "Ditch Day," because they need to help someone get their hands on Karl's package. What? No, an actual package. You know, like a parcel? Honestly, you people.


10:30pm, Comedy Central
Broad City
In "The Matrix," the ladies decide to take a break from this crazy modern world of ours with all its electronic gizmos and doodads. So they go off the grid and head to the park, where a magical world of rollerblading and dog marriage await.


LATE-NITE:
– Jon Cryer & Ashton Kutcher, Sage Kotsenburg, and Kristian Bush on Conan, 11pm, TBS
– Jennifer Aniston on The Daily Show with Jon Stewart, 11pm, Comedy Central
– Sigourney Weaver, Andy Cohen, and Ella Henderson on The Tonight Show Starring Jimmy Fallon, 11:35pm, NBC
– Will Smith and Grizfolk on Late Show with David Letterman, 11:35pm, CBS
– Neil Patrick Harris, Gillian Jacobs, and Rascal Flatts on Jimmy Kimmel Live, 11:35pm, ABC
– Kathy Griffin, Peter Sarsgaard, and The Mavericks on Late Night with Seth Meyers, 12:35am, NBC
– Matthew Perry, Nick Kroll, and guest host Thomas Lennon on The Late Late Show, 12:37am, CBS


WHAT ARE YOU WATCHING TONIGHT?