TV THIS WEEK: 'Resident Alien,' 'Astrid & Lilly' and 'Snowpiercer' premiere; 'Peacemaker' and 'Boba Fett'

New week? That means new shows — or at least it does this week if you're a sci-fi (and SYFY) fan looking for all the new geeky stuff.

SYFY has two big premieres this week, with the return of hit series Resident Alien for its second season as Alan Tudyk returns as our favorite alien in disguise; plus the series premiere of Astrid & Lilly Save the World, a new show about two girls just trying to get through high school while also fending off monsters from another dimension. Digging a big deeper, TNT has the season premiere of returning sci-fi thriller Snowpiercer, while The CW has the season finale of mystery series Nancy Drew.

Disney+ has a new episode of its latest Star Wars live action series The Book of Boba Fett (which fans think could include the return of a fan favorite character if subtle musical cues are to be believed), and HBO Max has a killer new episode of Peacemaker. That is assuming we ever stop replaying the opening credits sequence, of course. The CW also has new episodes of Superman & Lois, Batwoman and DC's Legends of Tomorrow to round things out.

Check out the full rundown below.

HIGHLIGHTS

Snowpiercer (TNT), Monday 9 p.m. - "The Tortoise and the Hare"


SEASON PREMIERE: While Wilford emphasizes his rule aboard his icy train, Layton's pirate train continues its dangerous quest for warm spots, and comes across something entirely unexpected.

The Book of Boba Fett (Disney+), Wednesday - "New Episode"

A thrilling Star Wars adventure teased in a surprise end-credit sequence following the Season 2 finale of The Mandalorian, finds legendary bounty hunter Boba Fett and mercenary Fennec Shand navigating the galaxy's underworld when they return to the sands of Tatooine to stake their claim on the territory once ruled by Jabba the Hutt and his crime syndicate.

Resident Alien (SYFY), Wednesday 9 p.m. - "Old Friends"


SEASON PREMIERE: Harry the alien is back on Earth and doesn't remember who he is, and only Asta can keep him safe.

Astrid & Lilly Save the World (SYFY), Wednesday 10 p.m. - "Tontoom"


SERIES PREMIERE: Astrid and Lilly open a portal to another dimension and become monster hunters to save humanity.

Peacemaker (HBO Max), Thursday - "Episode 5"

Explores the origins of the character that John Cena first portrayed in James Gunn's 2021 film, The Suicide Squad – a compellingly vainglorious man who believes in peace at any cost, no matter how many people he has to kill to get it. The series stars John Cena as Peacemaker, Danielle Brooks as Adebayo, Freddie Stroma as Vigilante, Jennifer Holland as Harcourt, Steve Agee as Economos, Chukwudi Iwuji as Murn and Robert Patrick as Auggie Smith.

MONDAY

The Last Duel (HBO), Monday 6:20 p.m.

NETWORK PREMIERE: The true story of a woman who defied a nation and made history.

Snowpiercer (TNT), Monday 9 p.m. - "The Tortoise and the Hare"


See more in our "Highlights" section above.

4400 (The CW), Monday 9 p.m. - "Give Up the Ghost"


The government deals another blow to the 4400; Jharrel gets some shocking information about his brother; Shanice and Andre continue to grow closer; Mildred resurfaces.

Ordinary Joe (NBC), Monday 10 p.m. - "Aftermath"


Cop Joe tries to impress Amy's family; Nurse Joe takes an important road trip with Chris; Music Joe hits rock bottom.

TUESDAY

Superman & Lois (The CW), Tuesday 8 p.m. - "The Thing in the Mines"


Lois reaches out to retired Gen. Lane; Clark's visions become worse during heated arguments with both Jonathan and Jordan; Lana shares her frustrations with Kyle.

The Osbournes Want to Believe (Travel), Tuesday 8 p.m. - "Unbelievable UFOs"


Jack has some new tricks up his sleeves as he tries to convince Ozzy and Sharon time travel is real; Jack reveals evidence of an Ice Age UFO and a doughnut-shaped spacecraft.

Naomi (The CW), Tuesday 9 p.m. - "Zero to Sixty"


Naomi gets guidance from Dee as she learns to harness her powers; Zumbado seeks out the help of an old friend to help further his plans.

WEDNESDAY

The Book of Boba Fett (Disney+), Wednesday - "New Episode"

See more in our "Highlights" section above.

DC's Legends of Tomorrow (The CW), Wednesday 8 p.m. - "The Fixed Point"


Sara decides to create an aberration that will allow the team to take back the Evil Waverider; Zari and Spooner are forced to awkwardly interact with each other as the rest of the Legends are paired up on the mission.

Resident Alien (SYFY), Wednesday 9 p.m. - "Old Friends"


See more in our "Highlights" section above.

Batwoman (The CW), Wednesday 9 p.m. - "Toxic"


Batwoman's hands are full as she juggles Jada's demands, Mary's ever-increasing power and a new romantic entanglement; Batwoman races against the clock to once again save the city and those closest to her.

Astrid & Lilly Save the World (SYFY), Wednesday 10 p.m. - "Tontoom"


See more in our "Highlights" section above.

THURSDAY

Peacemaker (HBO Max), Thursday - Episode 5

See more in our "Highlights" section above.

Knives Out (SYFY), Thursday 7 p.m.

NETWORK PREMIERE: The circumstances surrounding the death of crime novelist Harlan Thrombey are mysterious, but there's one thing that renowned Detective Benoit Blanc knows for sure — everyone in the wildly dysfunctional Thrombey family is a suspect.

BattleBots (Discovery), Thursday 8 p.m. - "Out with the Old"


With World Championship qualification on their minds, many of the best bots on the planet, including Tantrum, Sawblaze, Madcatter and former champ Tombstone, put it all on the line trying to win their second match of the qualifying round.

FRIDAY

The Woman in the House Across the Street From the Girl in the Window (Netflix), Friday

SERIES PREMIERE: Mixing wine, pills, casseroles and an overactive imagination, Anna obsesses over a hunky neighbor across the street and witnesses a murder. Or did she?

Nancy Drew (The CW), Friday 9 p.m. - "The Ransom of the Forsaken Soul"


SEASON FINALE: The fate of Horseshoe Bay rests in the hands of the friends, who must find a way to defeat their most powerful nemesis yet; a decision changes everything forever.

SATURDAY

Star Wars: The Rise of Skywalker (TNT), Saturday 7 p.m.

Finn and Poe lead the Resistance to put a stop to the First Order's plans to form a new Empire, while Rey anticipates her inevitable confrontation with Kylo Ren. Warning: Some flashing-lights scenes in this film may affect photosensitive viewers.

The Angry Birds Movie (Freeform), Saturday 7:45 p.m.

NETWORK PREMIERE: Three flightless birds (Jason Sudeikis, Josh Gad, Danny McBride) investigate the mysterious arrival of green pigs to their island paradise.

The Angry Birds Movie 2 (Freeform), Saturday 9:55 p.m.

NETWORK PREMIERE: Red, Chuck, Bomb and the rest of their feathered friends unite with the green pigs when aggressive birds from an ice-covered island plan to use an elaborate weapon to destroy them both.

SUNDAY

Two Sentence Horror Stories (The CW), Sunday 9 p.m. - "Teeth"


A couple leave the city for a romantic weekend in the woods, only to find themselves the target of a group of hostile locals.

The Walking Dead: Origins (AMC), Sunday 9 p.m. - "Negan's Story"


The enigma that is Negan, as told by Jeffrey Dean Morgan, the actor who plays him, with a look back at key moments from "The Walking Dead," plus an exclusive look ahead at Season 11.

Two Sentence Horror Stories (The CW), Sunday 9:30 p.m. - "The Killer Inside"


A couple's quarrel takes a dark and violent turn, revealing how far one of them will go to protect the other one.

*TV listings via network and streaming listings, Zap2it.