TV THIS WEEK: Snowpiercer premiere, Arrowverse finales, Mark Hamill vamps out, She-Ra and more

It's a finale-loaded week as a whole lot of ongoing shows wrap up their runs as we head into summer. But there are a few new shows premiering and continuing on — including one long-awaited sci-fi project that should keep us cool through the hot months.

Most of the Arrowverse is wrapping its season up prematurely due to the pandemic that shut down pretty much all TV and film production. The Flash, Batwoman and Supergirl are all ending this week with "finales" that actually fall an episode or two short of the originally planned finales. Over on Fox, animated mainstays The Simpsons and Family Guy are also wrapping their current seasons. 

But if you're looking for something new, you're in luck: TNT's long-simmering adaptation of Snowpiercer is finally rolling into the station. It looks to be one of the few high-profile sci-fi shows premiering for a while, so it stands to reason it'll have a captive audience of genre fans jonesing for something fresh. FX's What We Do in the Shadows is also new this week, with Mark Hamill (Star Wars) making a deliciously evil guest-starring turn.

On streaming, Netflix's She-Ra and the Princesses of Power drops its final season, DC Universe has a new Harley Quinn, and Disney+ is still rolling out new episodes of its Mandalorian docu-series. If you're looking for streaming shows on cable, we have that, too: AMC is still airing the first season of Shudder's Creepshow, while SYFY is still rolling out the first season of Harley Quinn.

Check out the full rundown below and let us know what you’ll be bingeing.

HIGHLIGHTS

The Flash (The CW), Tuesday 8PM - "Success is Assured"

SEASON FINALE: Barry considers a risky plan to save Iris from the Mirrorverse. Ralph attempts to stop Sue from making a grave mistake that could destroy her life.

What We Do in the Shadows (FX), Wednesday 10PM - "On the Run"

Mark Hamill guest stars as a vengeful enemy from the past appears without warning. Laszlo flees his home and goes into hiding to avoid certain death.

She-Ra and the Princesses of Power: Season 5 (Netflix), Friday

SEASON PREMIERE: The fifth season of the hit Netflix animated series. Join our heroes as they fight the ultimate evil, once and for all in the final season.

The Simpsons (Fox), Sunday 8PM - "The Way of the Dog"

SEASON FINALE: After the Simpsons' dog bites Marge, the family explores the tragic past of Santa's Little Helper.

Snowpiercer (TNT), Sunday 9PM - "First, the Weather Changed"

SERIES PREMIERE: A grisly murder stokes class division on Snowpiercer, the Great Ark Train; Melanie Cavill, the powerful head of hospitality, deputizes a dangerous rebel to help solve the killing -- Andre Layton, the world's only surviving homicide detective.

MONDAY

Roswell, New Mexico (The CW), Monday 9PM - "The Diner"

After uncovering a surprising connection to their past, Michael and Isobel learn the painful truth about the night Tripp attacked their mothers. Meanwhile, Alex confronts his father about their troubled family history. Elsewhere, Kyle's first date with Steph takes an awkward turn after Liz inadvertently becomes a third wheel. Nathan Dean also stars.

Creepshow (AMC), Monday 10PM - "Bad Wolf Down; The Finge"

Shudder’s streaming original on AMC: A group of American soldiers find something more despicable behind the enemy lines; A man discovers a growing finger.

TUESDAY

The Flash (The CW), Tuesday 8PM - "Success is Assured"

See more in our "Highlights" section above.

DC's Legends of Tomorrow (The CW), Tuesday 9PM - "Freaks & Geeks"

The Legends find themselves going back to college and form a sorority in order to try to retrieve an ancient artifact called the Chalice of Dionyus that will help Charlie (Maisie Richardson-Sellers) operate the Loom of Fate. Proud to be back at his college, Nate (Nick Zano) falls under Dion’s spell, letting him know of Sara (Caity Lotz), Astra (Olivia Swann), Ava (Jes Macallan) and Charlie’s plan to get the cup. Meanwhile, on a father-daughter weekend, Rory (Dominic Purcell) takes Lita (guest star Mina Sundwall) on a college tour, but Rory bails on Lita for an unexpected reason. Tala Ashe and Matt Ryan also star.

WEDNESDAY

Ghost Hunters (A&E), Wednesday 9PM - "The Last Mission"

Reports of paranormal activity in the Wendover Airfield stir speculation.

Motherland: Fort Salem (Freeform), Wednesday 9PM - "Coup"

In the aftermath of Citydrop, the unit comes closer together, while their distrust of Alder grows. Abigail is faced with eulogizing a fallen soldier, while Tally learns something new about Gerit. Anacostia grants one last favor to Scylla.

What We Do in the Shadows (FX), Wednesday 10PM - "On the Run"

See more in our "Highlights" section above.

THURSDAY

Katy Keene (The CW), Thursday 8PM - "Chapter Thirteen: Come Together"

Katy is starting to see things a little more clearly and needs Gloria's help to make her plan work and it leads her to unexpected opportunities. Eager to make things right, Pepper finds a way to make it right with Jorge and Josie, but she must also try to let go of people in her past. Jorge holds a rally to stop the sale of his parents building, but he has no idea who he is going up against. Meanwhile, Josie is worried about Alexander and turns to someone unexpected for help.

Blindspot (NBC), Thursday 9PM - "We Didn’t Start the Fire"

Jane and the team reach out to Patterson's father in the hope of gaining access to a high-level conference in Finland, where they hope to bring Matthew Weitz their side.

Siren (Freeform), Thursday 10PM - "Til Death Do Us Part"

Ryn, Ben and Maddie must protect Bristol Cove from Tia's army. Meanwhile Ben's injections are producing unexpected results, which alarms both him and others. And Xander juggles best man duties in Calvin's wedding, while also helping Helen.

FRIDAY

She-Ra and the Princesses of Power: Season 5 (Netflix), Friday

See more in our "Highlights" section above.

Disney Gallery: The Mandalorian (Disney+), Friday - "Episode 103 – Cast"

Pedro Pascal, Gina Carano, and Carl Weathers discuss the making of The Mandalorian.

Harley Quinn (DC Universe), Friday - "There's No Place to Go But Down"

Acting as a judge, Two Face sentences Harley and Ivy to life in Bane's prison. Meanwhile, Jim Gordon and Batgirl vow to take back the GCPD from Two Face.

The Last Drive-In With Joe Bob Briggs (Shudder), Friday - "Episode 2.04"

Proving once again that "the drive-in will never die," iconic horror host and exploitation movie aficionado Joe Bob Briggs is back with an all-new Shudder Original series, hosting weekly Friday night double features streaming live exclusively on Shudder. Every week, The Last Drive-In series offers an eclectic pairing of films, with selections ranging across five decades and running the gamut from horror classics to obscurities and foreign cult favorites. And from time to time, special surprise guests will drop in on Joe Bob and Darcy the Mail Girl.

Masters of Illusion (The CW), Friday 8PM - "Quick Changes, The Bird King, and Very Sharp Objects"

Hosted by Dean Cain, "Masters of Illusion" features amazing magic by cutting-edge illusionists, escape artists, and performers displaying skills ranging from perplexing interactive mind magic to hilarious comedy routines — all in front of a studio audience. Magicians featured in this episode include Jeki Yoo & Ellie, Dan Sperry, Trigg Watson, Josephine Lee, Hakan Berg and Hans Klok.

Masters of Illusion (The CW), Friday 8:30PM - "The Sphere of Fog, Crossbows, and more Ed Alonzo"

Hosted by Dean Cain, "Masters of Illusion" features amazing magic by cutting-edge illusionists, escape artists and performers displaying skills ranging from perplexing interactive mind magic to hilarious comedy routines — all in front of a studio audience. Magicians featured in this episode include Tommy Wind, Louie Foxx, Alexandra Duvivier, Ben Blaque, Ed Alonzo and Jason Bishop.

SATURDAY

Joker (HBO), Saturday 8PM

NETWORK PREMIERE: Put on a happy face.

SUNDAY

CBS Sunday Night Movie: Mission: Impossible (CBS), Sunday 8PM

Branded a traitor, an elite intelligence agent (Tom Cruise) investigates a failed Prague mission to retrieve a computer disk.

Batwoman (The CW), Sunday 8PM - "O, Mouse!"

SEASON FINALE: When one of Gotham's former heroes returns to settle a score, both Batwoman and Cmdr. Kane find themselves on the defensive; Alice uncovers what could finally take down Batwoman; Cmdr. Kane refuses to retreat from his war on Batwoman.

The Simpsons (Fox), Sunday 8PM - "The Way of the Dog"

See more in our "Highlights" section above.

Killing Eve (AMC), Sunday 9PM - "End of Game"

Villanelle is a psychopathic assassin, and Eve is the woman charged with hunting her down; the two fiercely intelligent women, equally obsessed with each other, go head to head in an epic game of cat and mouse.

Snowpiercer (TNT), Sunday 9PM - "First, the Weather Changed"

See more in our "Highlights" section above.

Supergirl (The CW), Sunday 9PM - "Immortal Kombat"

SEASON FINALE: Supergirl realizes that she must work with Lena to stop Lex and Leviathan; Nia struggles with what her dreams are trying to tell her; Brainy realizes there is only one way to stop Lex.

Marvel's Spider-Man: Maximum Venom (Disney XD), Sunday 9PM - "Amazing Friends"

Toddler Groot lands on Earth to deliver an urgent warning to Spider-Man, who must decode the alien's message and keep him out of the evil clutches of A.I.M. and Baron Mordo.

Family Guy (Fox), Sunday 9:30PM - "Movin' In (Principal Shepherd's Song)"

SEASON FINALE: Principal Shepherd moves in with the Griffins after he is fired for fat-shaming Chris at school, Brian sues Stewie for writing a series of children's books which portray him as an idiot.

Penny Dreadful: City of Angels (Showtime), Sunday 10PM - "Josefina and the Holy Spirit"

Tiago scours Sister Molly's beach house for clues; Peter Craft invites Elsa to a party; Lewis asks a gangster to help battle the growing Nazi menace in Los Angeles; Josefina Vega has a harrowing encounter with the police; Mateo seeks retribution.

Harley Quinn (SYFY), Sunday 11PM - "L.O.D.R.S.V.P.," "A Seat at the Table," "Bensonhurst"

The first season of the DC Universe animated hit makes its linear debut on SYFY: Harley gets an invite to the Legion of Doom's prospective members party, but Ivy discovers that it is her that the group is really after, which may cause a rift between the besties. Then: After becoming a newly minted member of the Legion of Doom, Harley naturally finds she must spend time with The Joker; now that they're equals, Harley is in danger of backsliding into her old toxic relationship with Gotham's Clown Prince of Crime. Then: After a falling out with her crew, Harley heads back home to Bensonhurst, where her doting mother waits along with her deadbeat father, who's more dangerous than anticipated.

*TV listing information via TV Guide, Zap2it, network listings.