This week's Gotham involves a clown fight, the Flying Graysons, and perhaps our first real glimpse of the Joker. Vikings returns for a third season of war-filled historical fiction. Archer ends up at Area 51, Gravity Falls does a bit of ghostbusting, and a character from the comics turns up on Walking Dead.

Top image via IGN.

Tonight

Splitting Adam (7 PM, Nickelodeon)

In this punnily titled TV movie, a 15-year-old stumbles into his uncle's "tanning bed" and discovers it's a duplicator machine. It turns out that multiple Adams are the solution to his problems — until they start causing trouble.

Gotham (8 PM, Fox)

The Flying Graysons make their debut this week when Gordon takes Dr. Leslie Thompkins to the circus — which naturally comes under attack. Plus we meet a boy who may or may not be the future Joker himself, but somehow signals the beginning of the Joker's story on Gotham.

The Originals (8 PM, The CW)

With the final preparations for her union to Jackson (guest star Nathan Parsons) underway, Hayley (Phoebe Tonkin) begins to question whether the ritual will actually work. After arriving to the compound, Elijah (Daniel Gillies) has a tense encounter with Klaus (Joseph Morgan) and quickly suspects that his brother may be up to something. Meanwhile, Kaleb (guest star Daniel Sharman), who is harboring a devastating secret from Davina (Danielle Campbell), seeks help from Rebekah (guest star Maisie Richardson-Sellers) when he realizes time is not on his side. Lastly, Cami (Leah Pipes) makes a startling revelation involving baby Hope.

Gravity Falls (8:30 PM, Disney XD)

Nathan Fillion is back as Pacifica's father, and Pacifica is getting ready to throw a party at the Northwest Mansion. But first, she has to deal with a ghost who could wreak havoc on the soiree, so she enlists Dipper for a little ghostbusting.

Sleepy Hollow (9 PM, Fox)

Someone is out to reawaken a powerful witch coven — and Ichabod and Abbie are on the case. Meanwhile, Jenny learns something else disturbing about Frank Irving's return.

Tuesday

The Flash (8 PM, The CW)

A nuclear blast has separated Ronnie and Dr. Stein, and at first, things seem hunky dory. Caitlin's got her fiancé back; Stein goes back to his wife. But when General Eiling targets Firestorm, the pair wonders if they're not safer together.

Oh, and some point this season, we'll be seeing more of this fella:

Face Off (9 PM, Syfy)

Doug Jones of Hellboy guest judges this week's contest, in which each of the challengers must create a troll inspired by a real bridge.

Agent Carter (9 PM, ABC)

Leviathan makes its move against Peggy as the SSR zeroes in on Howard Stark. But it's the SSR that may pay the ultimate price when its true enemy strikes.

Supernatural (9 PM, The CW)

Cain returns, and the Winchesters will need Crowley's help to deal with him. That means that our demon pal will have to bail on plans with Mama Rowena — and she's not going to take it well.

Person of Interest (10 PM, CBS)

Claire, a hacker whom Finch tried to protect from Samaritan, reaches out this week as Reese tries to figure out who is threatening a programmer with a mysterious second life.

Wednesday

Arrow (8 PM, The CW)

Thanks to Malcolm, Thea and Oliver end up on Lian Yu with Deathstroke. And a flashback reveals a time when Oliver, defying orders, checked in on his family during his disappearance.

The 100 (9 PM, The CW)

Clarke's been taking her cues from Lexa for a while now, but she's finally starting to question the Grounder commander's decisions. Jasper takes on a leadership role under Mount Weather, but things get tricky when Cage puts Maya in a dangerous situation.

Thursday

Cartoons (5 PM, Cartoon Network)

On The Amazing World of Gumball (5 PM), Gumball and Darwin have to wait until the weekend to see The Screamening, which means they'll have to spend all week avoiding spoilers. On Uncle Grandpa (5:30 PM), Uncle Grandpa receives an ominous fortune cookie and tries to figure out which of his friends is an enemy in disguise. Cyborg and Starfire find a baby bird on Teen Titans Go! (6 PM) and it awakens their inner children. On Steven Universe (6:30 PM), Steven has to get Connie home before it starts snowing. On Adventure Time (7 PM), Susan Strong and her allies infiltrate the mysterious Super Porp factory. And on Regular Show (7:30 PM), Mordecai and Rigby want to win a happy birthday song contest.

QI (8 PM, BBC America)

Stephen Fry's popular trivia show finally joins the BBC America line-up this week with three back-to-back episodes. Watch and become smarter.

The Vampire Diaries (8 PM, The CW)

Reality is finally starting to set in for Caroline as she deals with her grief. Damon tries to offer her advice on how to cope, which stirs up painful memories of his own mother.

Archer (10 PM, FX)

This weeks mission brings us to Area 51. So, will we encounter aliens, autopsied or otherwise?

Vikings (10 PM, History)

The historical drama is back for a third season, when the vikings serving King Ecbert start colonizing Wessex.

Friday

12 Monkeys (9 PM, Syfy)

With an alternate reality now in play, Cole risks his future to save Cassandra and correct the timeline.

Helix (10 PM, Syfy)

Ilaria's sinister agenda is revealed...as is Michael's grotesque legacy.

Saturday

Scooby-Doo! Frankencreepy (6 PM, Cartoon Network)

Velma learns that she has inherited her great-great-uncle Dr. Von Dinkenstein's cursed castle in Transylvania, Pennsylvania. The Gang goes with Velma to claim her inheritance, but things go south when the supposed ghost of Dinkenstein Castle blows up the Mystery Machine. It turns out that Velma has been hiding a family secret, one involving a legend of a mad scientist's monster.

Sunday

The Walking Dead (9 PM, AMC)

Rick and company meet an apparently friendly person, but they find themselves mistrustful. It looks like we're meeting another character from the comics, but after Woodbury and Terminus, our survivors are more than a little cautious.