One of America's Founding Fathers may still be alive in Sleepy Hollow's latest colonial-themed quest. Plus, Tarkin arrives on Star Wars Rebels — and he's Grand Moff Tarkin now. Check out a clip of Batman rocking out on Teen Titans Go! and see what happens when the SSR agents meet Agent Carter's pearl-clutching landlady!

Tonight

Gotham (8 PM, Fox)

While Bullock and Gordon hunt down their gland-harvesting biology teacher, Falcone tries to change Maroni's plans for the Penguin. Plus, young Master Bruce finds himself on a treacherous hike.

The Originals (8 PM, The CW)

More dangerous than ever, Vincent (guest star Yusuf Gatewood) remains one step ahead after joining forces with a powerful figure from his past. As the threat to Hope's life grows stronger, Klaus (Joseph Morgan) realizes he has no choice but to place his trust in his siblings to ensure she remains protected. Meanwhile, after being presented with an enticing proposition, Kaleb (guest star Daniel Sharman) is forced to make a difficult life or death decision, and Elijah (Daniel Gillies) finds himself in the fight of his life after an unexpected visitor arrives at the safe house. At the bayou, Hayley (Phoebe Tonkin) and Jackson (guest star Nathan Parsons) continue to prepare for the unification ritual, but things quickly go awry when they become pawns in Vincent's dangerous plan.

Phineas and Ferb (8:30 PM, Disney XD)

This week's special is set ten years in the future, when the boys are teenagers. Phineas is decided between two colleges and dealing with the realization that Isabella has had a crush on him all these years. Meanwhile, Doof is dealing with issues of his own, namely a midlife crisis.

Scorpion (9 PM, CBS)

In order to disable stolen rockets, the team goes undercover on…wait for it…a cruise ship. That's where I always stash my stolen weapons.

Sleepy Hollow (9 PM, Fox)

Ichabod Crane may not be the only Revolution-era fellow still hanging around modern-day Sleepy Hollow. When he and Abbie enter into a secret crypt, they encounter Thomas Jefferson — and he's played by Steven Weber. Will Jefferson be as delightfully bemused with the 21st century?

Star Wars Rebels (9 PM, Disney XD)

As public awareness increases around the Rebels activity, they target an important Imperial network. Plus, Grand Moff Tarkin arrives!

Tuesday

The Flash (8 PM, The CW)

What happened to Ronnie? Barry and the team have to track down Ronnie after Ronnie attacks a physicist, and decide they need to find Dr. Martin Stein, who was working on the F.I.R.E.S.T.O.R.M. project. And Barry discovers the challenges of balancing his superhero duties with a new romance.

Face Off (9 PM, Syfy)

This week, the contestants are using music as their inspiration, creating characters drawn from the music of composer Erik Aadahl.

Agent Carter (9 PM, ABC)

It looks like Peggy is in trouble as Souza comes close to confirming the truth about her. Certainly those SSR agents in her apartment aren't a good sign. But Peggy is closing in a truth of her own: learning a shocking secret about Leviathan even as she doesn't understand how close her enemies are.

Supernatural (9 PM, The CW)

A ghost is haunting electronic devices — and it's out to kill. The Winchesters have to figure out who the ghost is and why it's targeting a group of college students — not to mention how it's killing — before it's too late.

Forever (10 PM, ABC)

A king in exile might be responsible for the death of a man with royal lineage who — say it with me now — has a surprising connection to Henry.

Person of Interest (10 PM, CBS)

The Machine arranges for Finch to sit on the jury for a murder trial, and Finch suspects one of his fellow jurors may be there to rig the outcome.

Wednesday

Arrow (8 PM, The CW)

Oliver is used to running the show when it comes to Team Arrow, and he's thrown by the changes that have happened since he's been away. For one thing, he's furious that Laurel has been risking her life as the Black Canary, but with Vertigo on the loose, Oliver can't simply order Laurel to stay an indoor bird. But when Laurel faces off against Vertigo, she may be in for more than she can handle.

The 100 (9 PM, The CW)

The tensions between Abby and Clarke come to a head when Abby decides Clarke has crossed a line. But as things reach a breaking point at Mount Weather, the undergrounders may be bringing out their big guns — literally. And Jaha and Murphy encounter a mysterious stranger who may not be what she seems.

Thursday

Cartoons (5 PM, Cartoon Network)

On The Amazing World of Gumball (5 PM), when things aren't going Gumball's way, he becomes convinced that there's a secret society at school — and he wants in. On a prehistoric-themed Uncle Grandpa (5:30 PM), Uncle Grandpa must save Mr. Gus from a group of ravenous cavemen. Cyborg becomes "Fleshy Guy" when he's uncyborgified on Teen Titans Go! (6 PM), and Steven and his pals go to the lighthouse to watch scary movies on Steven Universe (6:30 PM). Lemongrab and Finn go on a journey of discovery through the Mountain of Matthew on Adventure Time (7:30 PM), and Joel McHale guest stars on Regular Show (7:45 PM), where the Discmasters have to end the Format Wars once and for all.

Vampire Diaries (8 PM, The CW)

Jeremy and Elena reminisce about their past as Jeremy prepares to leave Mystic Falls. Stefan and Caroline grow closer as they prepare Caroline's family cabin where her mom will live out her final days. And Sheriff Forbes turns to Damon for help on one of her remaining open cases, one that involves Elena's parents.

Archer (10 PM, FX)

Archer's first weekend alone with baby AJ is soiled by a Pakistani intelligence officer.

Friday

Constantine (8 PM, NBC)

Detective Jim Corrigan asks John and Zed to return to New Orleans to investigate the case of a missing girl. Naturally, this means another confrontation with Papa Midnite.

12 Monkeys (9 PM, Syfy)

Cole and Cassandra locate the source of the virus — and come face to face with the Army of the 12 Monkeys

Grimm (9 PM, NBC)

Nick has to turn to an old foe for help when a case of arson appears to have Wesen origins. And Juliette ends up in a confrontation sooner than she expected.

Helix (10 PM, Syfy)

Alan and Peter find themselves in close quarters as Michael shows his true colors.

Saturday

Mythbusters (9 PM, Discovery)

This week, the team channels The Fast and the Furious and tests out myths related to auto drifting.

Sunday

The Walking Dead (9 PM, AMC)

After last night's devastating episode, the group is feeling beaten living on the road, but needs to keep trudging forward toward Washington, DC.

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