Select members of The Backstreet Boys, N*Sync, 98 Degrees and O-Town battle zombies in the old West! The Flash crosses over to Supergirl! Wynona Earp premieres on Syfy! Archer returns for another season! All this, and the feature-length season finale of The Walking Dead, all on this week’s TV!

Tonight

Teen Titans Go! (6PM, CARTOON)

Batman vs. The Teen Titans: Dark Injustice

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“The Titans try to outprank each other on April Fools’ Day.”

New episodes of every ongoing Cartoon Network series, all next week!

Gotham (8PM, FOX)

Sponsored

Prisoners

“After Gordon is removed from protective custody, he begins to face new threats and dangers inside prison walls. In order to survive, he must rely on a new friend, as well as Bullock and other outside help. Meanwhile, Penguin grows closer to his father, while his step-mother and step-siblings move forward with their own plans for the family.”

Can Melinda “Return of the Living Dead III” Clarke unspool the Van Dahl family?

Supergirl (8PM, CBS)

World’s Finest

“Kara gains a new ally when the lightning-fast superhero The Flash (Grant Gustin) suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.”

Livewire! Silver Banshee! The Flash! Crisis on Multiple Networks!

The Magicians (9PM, SYFY)

Remedial Battle Magic

“Consequences of prepping for the battle with the Beast goes beyond battle scars. Plus: Julia opens a door she may not be able to close.”

Damien (10PM, A&E)

The Number of a Man

“Damien and Rutledge thwart Shay’s investigation; Simone has an intense religious experience; Shay’s inquiry takes an unexpected turn.”

No promo for this one, so enjoy the Omen III trailer—definitely the biggest influence on this series.

Blindspot (10PM, NBC)

Older Cutthroat Canyon

“After a painting featuring one of Jane’s tattoos is heisted from a gallery, the team discovers Jane (Jaimie Alexander) is the real target. In order to protect her team, Jane goes AWOL.”

Also on tonight: Bates Motel (9PM, A&E), The Haunting of Ke$ha (9PM, LMN), Bitten (11PM, SYFY)

Tuesday

The Flash (8PM, CW)

The Flash Back

“After the shocking revelation that Zoom is Jay Garrick, Barry is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to increase his speed, Barry decides to travel back in time and masquerade as his earlier self in order to get his arch-nemesis, Dr. Harrison Wells/Eobard Thawne, to teach him how to run faster. However, things don’t go as planned and Barry is stunned to face familiar foe Hartley Rathaway (guest star Andy Mientus), as well as old friend Eddie Thawne (guest star Rick Cosnett). Iris makes peace with her past in order to embrace her future.”

The Pied Piper returns!

iZombie (9PM, CW)

Pour Some Sugar, Zombie

“Liv consumes the brain of a recently murdered stripper and uncovers some extremely useful information. Meanwhile, Blaine isn’t quite himself lately, and Ravi makes a startling discovery. Lastly, Major and Ravi are helping Peyton (guest star Aly Michalka) move back in with Liv when she receives a surprising phone call. Malcolm Goodwin also stars.”

Can’t wait!

Agents of SHIELD (9PM, ABC)

Watchdogs

“When a radical group called The Watchdogs emerges with plans to eliminate the Inhumans, Agent Mack and his brother become caught in the crossfire. Meanwhile, Simmons discovers a powerful chemical compound that could alter the future for Inhumans.”

Also on Tuesday: Clarence (6PM, CARTOON), American Crime Story (10PM, FX)

Wednesday

Arrow (8PM, CW)

Beacon of Hope

“Brie Larvan (guest star Emily Kinney) breaks out of jail and turns up at Palmer Tech threatening to kill everyone unless she gets the bio-chip that is implanted in Felicity’s (Emily Bett Rickards) spine. When Oliver (Stephen Amell) realizes that Felicity, Thea (Willa Holland) and Donna (guest star Charlotte Ross) are trapped in Palmer Tech with everyone else, he looks to a surprising ally to help Team Arrow save the day.”

The Bug-Eyed Bandit strikes back!

Supernatural (9PM, CW)

Red Meat

“Sam (Jared Padalecki) and Dean (Jensen Ackles) battle a pair of werewolves who have captured two victims. Just as the brothers are about to win, one of the werewolves shoots Sam. Dean gets his brother and the victims out of the house but learns a pack of werewolves are hot on their tail, hoping to kill them all.”

Star Wars: Rebels (9PM, DISNEY XD)

Twilight of the Apprentice Parts I & II

“After gaining information about the Sith, Kanan, Ezra and Ahsoka battle the Inquisitors with the help of a new ally, but are overmatched when Vader arrives.”

Two episodes, back-to-back!

Also on Wednesday: The Amazing World of Gumball (6PM, CARTOON), Face Off (9PM, SYFY)

Thursday

Legends of Tomorrow (8PM, CW)

Left Behind

“Ray (Brandon Routh), Sara (Caity Lotz) and Kendra (Ciara Renée) are shocked after they watch the Waverider fly off without them, leaving them stranded in the ‘50s. After waiting months for their teammates to come back, the three realize they must move on with their lives. Ray and Kendra bond as a couple but Sara decides to return to the League of Assassins and Ra’s al Ghul (guest star Matt Nable).”

You, Me and the Apocalypse (8PM, NBC)

End of Days

“Gaines (Paterson Joseph) and Scotty (Kyle Soller) break Rhonda (Jenna Fischer) and Leanne (Megan Mullally) out of jail and fly them to Slough for the bunker. Meanwhile, newlyweds Dave (Joel Fry) and Paula (Pauline Quirke) rescue Jamie (Mathew Baynton) from the bank vault. As they all arrive at the bunker, the door is jammed. In order to successfully survive the apocalypse, someone has to make a painful sacrifice.”

Series finale!

The 100 (9PM, CW)

Stealing Fire

“Clarke discovers a shocking truth, and Octavia is forced to make a decision that could have devastating consequences. Meanwhile, Kane and Abby share a moment.”

Archer (10PM, FX)

The Figgis Agency

“Archer breaks into a mansion to restore the honor of a Hollywood starlet.”

Also on Thursday: We Bare Bears (6PM, CARTOON), Vikings (10PM, HISTORY)

Friday

Dead 7 (8PM, SYFY)

“The two-hour movie is headlined by Backstreet Boys’ Nick Carter, playing Jack, the reluctant hero who unites the town’s outlaws in a showdown against the zombie menace.”

Written by Nick Carter himself, this zombie western features Carter, A.J. McLean, Howie Dorough (Backstreet Boys), Joey Fatone, Chris Kirkpatrick (*NSYNC), Jeff Timmons (98 Degrees), O-Town, and more! From The Asylum, of course!

Sleepy Hollow (8PM, FOX)

Delaware

“With a single day left before The Hidden One regains omniscience, Abbie and Crane must do the unthinkable in a last-ditch effort to save the world. Meanwhile, Jenny, Joe and Sophie devise a plan to stall as the Witnesses work.”

Vampire Diaries (8PM, CW)

Days of Futures Past

“In an attempt to make things right with his brother, Damon (Ian Somerhalder) offers to have Stefan’s (Paul Wesley) scar magically transferred to him, only to discover that doing so may come with some unexpected consequences. With time running out and Rayna (guest star Leslie-Anne Huff) closing in on Stefan, Valerie (guest star Elizabeth Blackmore) desperately attempts to reason with Damon before it’s too late. Elsewhere, after being framed for breaking Rayna out of The Armory, Enzo (Michael Malarkey) attempts to clear his name, but not before a violent run-in with Nora (guest star Scarlett Byrne) forces him to make an upsetting discovery.”

Ian Somerhalder directs!

The Originals (9PM, CW)

Alone With Everybody

“When rumors begin to spread about the remaining white oak bullet, dangerous foes descend upon New Orleans in an attempt to take down Klaus (Joseph Morgan) once and for all. As the threats continue to grow, Elijah (Daniel Gillies) urges his siblings to lay low at the compound while Marcel (Charles Michael Davis), Vincent (Yusuf Gatewood) and Josh (guest star Steven Krueger) chase down a lead involving a mysterious vampire named Sofya (guest star Taylor Cole), who may have the answers they’re looking for. Meanwhile, tensions inside the compound build as Kol (guest star Nathaniel Buzolic) is forced to come face to face with his brother Finn (guest star Casper Zafer), the person responsible for his death. Elsewhere, Klaus and Hayley (Phoebe Tonkin) seek shelter with her former pack and stumble upon some unsettling news involving the threat against them.”

Grimm (9PM, NBC)

Skin Deep

“When Nick (David Giuntoli) and Hank (Russell Hornsby) come across a beautiful young woman who seems to have aged 70 years overnight and died, they suspect Wesen involvement. The investigation leads to a local doctor and Rosalee (Bree Turner) is enlisted to help find the truth. Meanwhile, Eve (Bitsie Tulloch) takes bold steps to learn more about Capt. Renard’s (Sasha Roiz) nefarious dealings.”

Wynona Earp (10PM, SYFY)

Purgatory

Series premiere! Based on the comic book from IDW.

Saturday

All-Day Ghoulies/Critters Marathon (8AM, EL REY)

The first two Ghoulies movies + all four Critters films! Kicks off with Ghoulies 2, as all good things should.

Adventure Time (7PM, CARTOON)

Don’t Look

“Finn unearths a treasure with a terrible price at the top of Dead Mountain.”

Also on Saturday: Transformers: Robots in Disguise (6:30AM, CARTOON), Pokemon: XYZ (7PM, CARTOON), Regular Show (6PM, CARTOON), Miss Fisher’s Murder Mysteries (OVATION, 8PM), The Thundermans (8PM, NICK), Beowulf (10PM, ESQUIRE), Svengoolie Presents House of Horrors (10PM, MeTV)

Sunday

Abar, The First Black Superman (2AM, TCM)

A rare, high-def showing of Abar in the dead of night! A scientist gives his bodyguard superhuman powers in order to fight racists! Don’t miss it!

Teenage Mutant Ninja Turtles (11AM, NICK)

Revenge of the Triceratons

“Donatello is feeling inferior to Fugitoid, but his intellect is put to the test when the Triceratons attack.”

Once Upon a Time (8PM, ABC)

Our Decay

“Emma, Snow, David, Regina, Robin, Henry and Hook continue to search for a way to free everyone from the Underworld. At the mercy of Hades, Gold creates a portal to Storybrooke, which transports Belle, Zelena and Baby Hood to the Underworld. While Zelena and Regina get into a sibling squabble, Belle is reunited with Rumple only to learn some tremendously shocking news that will change her life forever. Meanwhile, Snow and David hopelessly attempt to send a message from the Underworld to their son, Neal. In flashbacks, Hades learns about Zelena’s very special spell and pays her a visit in Oz with the intention of striking an alliance, but finds himself with more than just a partner in crime.”

The Walking Dead (9PM, AMC)

The Last Day On Earth

90-minute season finale!

The Last Man On Earth (9:30PM, FOX)

Fish in the Dish

“Carol is back on the campaign for repopulation with Phil, and Todd’s juggling act finally puts him over the edge.”

Also on Sunday: Bob’s Burgers (8:30PM, FOX), Bob’s Burgers (9PM, FOX), Robot Chicken (12AM, CARTOON)