TV THIS WEEK: Kevin Smith's Flash, Mars, MST3K Thanksgiving marathon, and more

Welcome to TV This Week! Your one-stop shop for all the cool sci-fi and fantasy stuff you should be watching over the next seven days!

With Thanksgiving upon us, this week is a bit light when it comes to new stuff — though there are a few highlights, and some nifty marathons well worth your binge-watching.

In superhero fare, we have new episodes of Supergirl and Flash, as both shows gear up for the four-show crossover next week. With Arrow and Legends of Tomorrow falling a bit too close to the holiday, they take the week off. There are also new installments of Gotham, Timeless and Z Nation sprinkled in there for good measure. Looking to the marathons, you can jump online for your annual dose of Mystery Science Theater 3000, or just watch zombies all day on Syfy with Z Nation

Let’s dig in, and set your DVR accordingly.


The Flash (The CW), Tuesday, 8 p.m. - “Killer Frost”

Kevin Smith’s episode of Flash! Caitlin uses her powers to save Barry but, as her mother predicted, the effort unleashes her inner Killer Frost. Killer Frost then goes on a rampage looking for Dr. Alchemy, kidnapping Julian and battling both the Flash and Vibe. Meanwhile, Joe and H.R. have a heart-to-heart talk.


Mars (National Geographic), Monday, 9 p.m. - "Grounded"

The crew struggles to reach base camp. Astronaut Scott Kelly takes a yearlong space mission.


Mystery Science Theater 3000 (, Thursday, 11 a.m. - “Turkey Day Marathon”

The show might not be on the airwaves anymore, but you can stream the cult hit snark-fest online for Thanksgiving. For some fans, it’s a holiday tradition.


Gotham (Fox), Monday, 8 p.m. - “Mad City: Time Bomb”

A threat to Mario and Lee is revealed on the eve of their rehearsal dinner, which causes Falcone to turn to Jim for help. In other events, Nygma seeks revenge; and Bruce discovers more about the Court of Owls.


Supergirl (The CW), Monday, 8 p.m. - “The Darkest Place”

Guardian must clear his name after being accused of a murder committed by another vigilante; at the same time, Supergirl comes face to face with Cyborg Superman while on a solo mission to rescue Mon-El, who has been captured by Cadmus.


Mars (National Geographic), Monday, 9 p.m. - "Grounded"

See more information in our "Highlights" section above.

People of Earth (TBS), Monday, 9 p.m. - “Unexplained”

Unexplained visions and hallucinations plague Ozzie. Meanwhile, Chelsea and Father Doug bond over Bible study, and Kelly grapples with relationships.

Lucifer (Fox), Monday, 9 p.m. - “Homewrecker”

Lucifer and Chloe investigate the murder of the owner of the building in which Lux is located, while Maze and Amenadiel shadow Charlotte, who launches a plan to upset Lucifer to the point he'll want to leave Earth.


Scorpion (CBS), Monday, 10 p.m. - “Mother Load”

Paige's estranged mother enlists the team's help when she accidentally uncovers a forgotten nuclear reactor that's on the verge of exploding.

Timeless (NBC), Monday, 10 p.m. - “Stranded”

The trio track Garcia Flynn to 1754, where they land in hostile territory and must learn to trust one another to survive. Also, Agent Christopher investigates Connor Mason, and Jiya suspects that Rufus might be able to communicate with the present.


The Flash (The CW), Tuesday, 8 p.m. - “Killer Frost”

See more in our “Highlights” section above.

Teen Wolf (MTV), Tuesday, 9 p.m. - “Superpositiion”

Scott, Lydia and Malia search for lost memories of a missing friend; and Corey discovers a link between his abilities and the Wild Hunt.


Scream Queens (Fox), Tuesday, 9 p.m. - “Blood Drive”

To solve a serious shortage, Dean Munsch and Chanel start a blood drive. Meanwhile, Nurse Hoffel's plan for revenge is put in motion; Hester comes up with a way to join the hospital staff; and a jarring revelation about the Green Meanie is uncovered.


Aftermath (Syfy), Tuesday, 10 p.m. - “The Barbarous King”

The Copelands are accosted by a gang of bikers led by a figure from Karen's past. Later, it's hard to know who to trust when shapeshifters appear.


Milo Murphy's Law (Disney XD), Wednesday, 8:45 p.m. - “Family Vacation”

Milo accidentally vacations with the wrong family.

A Charlie Brown Christmas (ABC), Wednesday, 9 p.m.

An airing of the holiday classic. There’s not much else on, so kick back and enjoy


Z Nation (Syfy), Thursday, 6 a.m. - “Series Marathon”

If you haven’t been watching Syfy’s homegrown zombie series, Turkey Day is the perfect time to catch up. The network will be kicking off a multi-day marathon to get viewers up to speed. 


Mystery Science Theater 3000 (, Thursday, 11 a.m. - “Turkey Day Marathon”

See more in our “Highlights” section above.

The Simpsons (FXX), Thursday, 11 a.m. - “The Simpsons 600 marathon"

The mind-boggling, 600-episode marathon of The Simpsons kicks off on Thanksgiving, so enjoy the early years while chowing down on turkey. It will run all the way through December 7.


A Haunting (TLC), Friday, 8 p.m. - “Back From the Dead: Demons Never Die”

In an enhanced episode, a home is invaded by what is believed to be a demon hell-bent on hurting the members of a family one by one.

A Haunting (TLC), Friday, 9 p.m. - “Mother's Terror”

A woman buys a fixer-upper on Long Island after her firefighter husband dies in the line of duty, but the renovations uncover evidence of a dark history on the property.

Z Nation (Syfy), Friday, 9 p.m. - “Doc's Angels”

Doc tries to find a way to communicate with Warren, but instead encounters something much more menacing.


Van Helsing (Syfy), Friday, 10 p.m. - “Last Time”

There are glimmers of hope and reasons for grief when Vanessa and the group take shelter at Susan's family farm. With Sam finally outed as the serial killer, Vanessa and Mohamad take drastic action against him. Meanwhile, Rebecca's latest experiment to create Daywalkers fails; and Dmitri's patience grows thin.


Doctor Who (BBC America), Saturday, 8:25 p.m. - “The Power of the Daleks Episode Two”

The Doctor issues a warning against reactivating the Daleks after being summoned to investigate a space capsule.


Star Wars Rebels (Disney XD), Saturday, 8:30 p.m. - “The Wynkahthu Job”

The rebels team with a pair of unscrupulous pirates to salvage a freighter full of weapons for the rebellion, but the mission ends up being far more dangerous than anticipated.


Dirk Gently's Holistic Detective Agency (BBC America), Saturday, 9 p.m. - “Fix Everything”

The latest case for the quirky detective.


Once Upon a Time (ABC), Sunday, 8 p.m. - "Changelings" ​

A bond of sisterhood changes forever after Gold instructs the Evil Queen to kill Zelena. Meanwhile, a sacrifice made by Belle affects all of Storybrooke; Jasmine discovers a lamp with no genie; and in a flashback, Rumple kidnaps Jack and Jill's son.


The Librarians (TNT), Sunday 8 p.m. - "And the Fangs of Death" ​

Flynn leads the Librarians on a mission to rescue a kidnapped Charlene, but the team falls into a subterranean trap packed with menacing Egyptian werewolves overseen by old nemesis Apep.


Milo Murphy's Law (Disney XD), Sunday, 8:30 p.m. - "Secrets and Pies; Acadecamathalon"

Milo and Melissa share their most embarrassing stories, but Zack refuses; the gang participates in a school event that combines the Academic Decathlon and the Athletic Decathlon.

The Walking Dead (AMC), Sunday, 9 p.m. - "Swear" ​

A familiar face stumbles upon a brand new society. Their rules, location and setup are unlike anything that has been seen before.


Westworld (HBO), Sunday, 9 p.m. - "The Well-Tempered Clavier"

Hector mulls a proposition from Maeve; Dolores and Bernard dredge up old memories; Teddy's enlightenment comes with a cost.


Elementary (CBS), Sunday 9:30 p.m. - "How the Sausage Is Made" ​

Joan worries Sherlock's sobriety is at risk when she learns he has been lying to her about attending recovery meetings. Meanwhile, the sleuths discover a man's death that was caused by ingesting poisoned sausage is connected to a lab working on a breakthrough in the artificial meat industry.

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