The TV Cave’s Daily TV Guide: What to Watch on August 12

Wednesday night is bringing a little bit of everything to the TV screen, from superhero showdowns and reality TV drama to murder mysteries, culinary competitions and some very questionable celebrity decisions.

If your watchlist has been begging for attention, August 12 has plenty of options. Streaming gets an early start with the Season 4 premiere of Reacher, while X-Men '97 reaches its Season 2 finale. Later tonight, Big Brother puts its houseguests to the Power of Veto test, The Valley continues its reunion drama, and The Ark deals with yet another problem that absolutely nobody on that spaceship needed.

Here is everything you can watch tonight, organized by time so you can plan your evening without having to bounce between a dozen different apps.

TV Guide for Wednesday, August 12, 2026

Time	Show	Network/Streaming	What to Expect
3:00 AM ET	The Challenge	Paramount+	The Blue Team tries to recover from a rough start as changing alliances and team dynamics make the competition even tougher.
3:00 AM ET	Diarra From Detroit	Paramount+	Diarra discovers a witness connected to the Coney murders who wants a legendary hidden treasure in exchange for his testimony. The search takes the crew into dangerous territory.
3:00 AM ET	Let's Marry Harry	Netflix	Season 1 Finale: Harry must finally choose who he wants to be with, and viewers will find out whether the dating experiment ends with a proposal.
3:00 AM ET	Lucky	Apple TV	Lucky confronts her past while trying to figure out what comes next for her future.
3:00 AM ET	The Oval	Paramount+	Hunter becomes determined to expose the mole inside the Oval Office while Richard threatens Naomi's job as she continues challenging his authority.
3:00 AM ET	Reacher	Prime Video	Season 4 Premiere: A chance encounter with a distressed stranger on a Philadelphia subway pulls Jack Reacher into a deadly mystery involving a missing flash drive. First three episodes available.
3:00 AM ET	Ted Lasso	Apple TV	Ted returns to Richmond to meet the Lady Greyhounds, but his homecoming isn't exactly receiving a standing ovation from everyone.
3:00 AM ET	Trying	Apple TV	Nikki and Jason's date night takes a turn when suspicion gets in the way, while Princess finds her own evening spiraling.
3:00 AM ET	X-Men '97	Disney+	Season 2 Finale: The X-Men face their toughest moments yet as the team's past returns to complicate everything.
8:00 PM ET	Big Brother	CBS	Six houseguests, including nominees Barrett, Chuk and Haley, battle for the Power of Veto.
8:00 PM ET	MasterChef	FOX	The remaining home cooks work in pairs to recreate dishes inspired by the judges' favorite culinary memories. The night ends with a double elimination.
8:00 PM ET	The Valley	Bravo	Season 3 Reunion, Part 2: Luke faces questions about his relationship with Kirsten, while Jesse gets put under the microscope over his drinking.
8:00 PM ET	Who Wants to Be a Millionaire	ABC	Jesse Eisenberg and Paul Giamatti take the hot seat, followed by Krysten Ritter and Sarah Shahi.
9:00 PM ET	Nation's Dumbest	FOX	Celebrities face their dreaded midterms, with their final chance to stay out of the bottom half of the class. A mystery guest could steal the spotlight.
9:00 PM ET	Next Gen NYC	Bravo	The cast heads to Las Vegas for BravoCon while Rowan turns her envy of the event into creative inspiration back home in New York.
9:00 PM ET	The Shards	FX	Two Episodes: Susan's welcome party for Robert is interrupted by a terrifying and violent incident.
10:00 PM ET	The Ark	Syfy	Garnet and Ian put an escape plan into motion as a mysterious explosion rocks Homebase. Because apparently space wasn't stressful enough already.
10:00 PM ET	House of Stassi	Freeform	Stassi organizes a staycation to help everyone work through their drama, but a fight with Beau puts her directly in the middle of the mess. Katie also discovers that Taylor and Kristina have their own issues with her.

The Biggest TV Picks Tonight

If you're looking for the shows most likely to dominate the conversation, there are several obvious contenders.

Reacher Returns With Season 4

Jack Reacher is back, and this time a random encounter on a Philadelphia subway sends him into another dangerous mystery. The Season 4 premiere drops with the first three episodes, so Prime Video subscribers have plenty of Reacher to chew through immediately.

X-Men '97 Season 2 Comes to an End

The animated superhero favorite reaches its Season 2 finale on Disney+. The X-Men are already dealing with plenty of personal baggage, and tonight's episode promises to bring their history roaring back into the present. If you've been watching all season, this is definitely not the night to accidentally wander onto social media before watching.

Big Brother Has Another Power of Veto Battle

Over on CBS, the Big Brother house remains as unpredictable as ever. Six houseguests compete for the Power of Veto, including current nominees Barrett, Chuk and Haley. And as longtime fans know, the Power of Veto can turn a seemingly straightforward eviction plan upside down in approximately five seconds.

The Valley Reunion Keeps the Drama Coming

Bravo isn't letting the The Valley reunion cool down just yet. Part 2 puts Luke's relationship with Kirsten under the microscope and brings Jesse's drinking into the conversation. Translation: grab the snacks because this reunion clearly isn't finished airing everyone's business.

MasterChef Serves Up a Double Elimination

The remaining home cooks face off in pairs as they recreate dishes inspired by the judges' most cherished culinary memories. Unfortunately for two contestants, the pressure cooker ends with a double elimination. Nothing says Wednesday night like watching someone attempt to recreate a beloved dish while knowing their entire MasterChef future is sitting on the plate.

Late Night Brings More Problems

The night doesn't slow down after prime time. The Shards delivers two episodes at 9 PM ET on FX, while The Ark follows at 10 PM ET on Syfy with an escape plan and a mysterious explosion threatening Homebase. Meanwhile, House of Stassi brings more relationship drama to Freeform as Stassi's attempt to get everyone together for a relaxing staycation goes spectacularly off course. Because when has putting a group of people with unresolved problems in one place ever actually solved anything? Whether you're tuning in for scripted drama, reality TV, competition shows or streaming premieres, Wednesday, August 12 has enough television to keep the remote busy all night.

The TV Cave's advice? Pick your priorities early. Your DVR, streaming queues and sleep schedule may not survive the night.