TV THIS WEEK: Supergirl and Westworld finales, Preacher premiere, new 12 Monkeys and more

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Jun 18, 2018, 11:00 AM EDT

The CW's super-schedule finally come to an end for the year this week, but there's also a whole lot of new stuff worth checking out — including a whole lot of time travel shenanigans over at SYFY.

Supergirl wraps up its third season (and is already renewed for a fourth), and Westworld is also ending for the year. AMC is debuting the new season of Preacher, while SYFY is dropping a fresh three-hour block of new 12 Monkeys and a new episode of acclaimed space opera The Expanse this week. If you still need your superhero fix, Cloak & Dagger is new at Freeform. The Expanse, which is heading to Amazon Prime for its fourth season, has been firing on all cylinders this year, while 12 Monkeys' final season is shaping up to be phenomenal. Cloak & Dagger was a surprise hit, and is a slice of the angsty side of superhero stories.

Looking a bit deeper, there's a new Humans at AMC, a new The 100 at The CW, a new Colony on USA, a new Reverie on NBC and a whole lot more. The summer season is in full swing, so there's plenty of sci-fi fare for fans willing to look for it.

Check out our full rundown of what we'll be watching below and let us know what you think.


Supergirl (The CW), Monday 8PM - "Battles Lost and Won"

SEASON FINALE: In the Season 3 finale, Supergirl and the team face Serena in a battle for Earth.


The Expanse (SYFY), Wednesday 9PM - "Fallen World"

Drummer and Ashford find themselves trapped with few options for survival. Anna tends to the wounded masses as Melba continues to hunt down her prey. The Rocinante crew struggle to survive as Naomi reunites with her true family.


Marvel's Cloak and Dagger (Freeform), Thursday 8PM - "Call/Response"

Tandy and Tyrone come face-to-face as the two are able to sit down and talk. Having not been able to tell anyone else what they have been experiencing, both take the opportunity to finally confide in the one person who may truly understand what they are going through. Meanwhile, Otis reveals a secret side of himself and Greg seems to be onto something with Melissa's case against Roxxon.


12 Monkeys (SYFY), Friday 8PM - "Legacy," "Die Glocke," and "After"

Team Splinter goes back in time to the wild frontier in search of a weapon to destroy the Witness. Then: The team infiltrates a Nazi gala to steal an artifact known as "Die Glocke." Their operation comes undone when French Resistance interferes and an unexpected guest arrives. Then: A clue to breaking the cycle leads Cole and Cassie to the 1960s.


Westworld (HBO), Sunday 9PM - "The Passenger"

SEASON FINALE: We will win.


Preacher (AMC), Sunday 10PM - "Angelville"

SEASON PREMIERE: In an effort to save Tulip, Jesse and Cassidy take her to Jesse's family home, Angelville. Jesse reunites with the people he fears most: his family. The Season 3 premiere.


Supergirl (The CW), Monday 8PM - "Battles Lost and Won"

See more in our "Highlights" section above.

Elementary (CBS), Monday 10PM - "Sand Trap"

Holmes and Watson's search for the killer of a woman found encased in cement takes them inside the clean technology industry. Also, Watson takes a giant leap forward regarding her interest in adoption.


Face Off (SYFY), Tuesday 9PM - "Aztec Aliens"

The artists create ancient aliens that could have been the inspiration for Aztec gods.


The 100 (The CW), Tuesday 9PM - "Acceptable Losses"

Clarke and Bellamy make a startling discovery about Wonkru's battle plans as Echo risks her friendship with Raven to complete her mission.


HUMANS (AMC), Tuesday 10PM - "Episode 303"

Laura wants the truth about Operation Basswood. Mattie and Leo confront their feelings. Niska receives a mysterious message.


Expedition Unknown (Travel), Wednesday 9PM - "Beyond The Limit"

Josh Gates shares hilarious bonus moments from his Season 4 adventures.

The Expanse (SYFY), Wednesday 9PM - "Fallen World"

See more in our "Highlights" section above.

The Originals (The CW), Wednesday 9PM - "We Have Not Long to Love"

As Vincent, Marcel and Josh work to clean up the city, an uprising of purist vampires leads the supernatural factions into a deadly showdown. Hope's attempt to bring her family back together leaves her struggling with the consequences. Finally, Freya makes a life-changing decision.


Colony (USA), Wednesday 10PM - "Lazarus"

Katie suspects there might be a dark side to her refugee case work. Will helps Broussard and Amy with a Resistance operation. Snyder goes back to work for the IGA. Bram starts a new job.


Reverie (NBC), Wednesday 10PM - "Blue is the Coldest Color"

Oliver Hill, Alexis's former partner, warns Mara about the dangerous side effects of Reverie 2.0; and a BCI is stolen at Onira-Tech.


Marvel's Cloak and Dagger (Freeform), Thursday 8PM - "Call/Response"

See more in our "Highlights" section above.

UFOs: The Lost Evidence (Travel), Thursday 10PM - "Mysterious Ufo Earth Landings"

New evidence points to the possibility that ancient man was visited by extraterrestrials, influencing ancient technologies, architecture and art.


12 Monkeys (SYFY), Friday 8PM - "Legacy," "Die Glocke," and "After"

See more in our "Highlights" section above.

BattleBots (Discovery), Friday 8PM - "It's Fork Lifting Time!"

Rookie bot End Game and former BattleBots champ Bite Force duke it out in an action-packed night of battles.


It's a slow night, but lets be honest, you're probably headed to the theater to watch Jurassic World: Fallen Kingdom anyway, right?


Westworld (HBO), Sunday 9PM - "The Passenger"

See more in our "Highlights" section above.

Ghosted (Fox), Sunday 9:30PM - "The Article"

When an article is published revealing the Bureau Underground to the public, Merv asks Leroy to interrogate his coworkers to find out who may have leaked the information. Meanwhile, Max's parents arrive at the Bureau to express their concern about his career choice, and Ava gets closer to solving the mystery of who bugged the office.


Preacher (AMC), Sunday 10PM - "Angelville"

See more in our "Highlights" section above.