There is murder. There is marriage trouble. There is money trouble. And sitting right in the middle of all of it is America’s strange love affair with true crime.
Episode 1 is called The Great American Artform. It introduces Ava and Nathan Bartlett, played by Kaley Cuoco and Chris Messina. They are expecting a baby, their house needs expensive repairs, their careers are not going as planned, and their marriage has lost some of its spark.
Then a plumber named Matt Pierce walks into their lives.
That sounds harmless enough.
It definitely is not.
Peacock describes the episode simply: a realtor and former tennis star are struggling to stay afloat while a serial killer puts Los Angeles on alert. The episode runs about 44 minutes and originally premiered as part of Season 1 in June 2023.
Spoiler warning: From here on, this recap discusses the major events of Episode 1 and reveals the identity of the Season 1 killer.
What Happens in Based On A True Story Episode 1?
The episode opens by showing us that Los Angeles has a serious problem.
A young woman named Chloe Lake is attacked and killed. She becomes connected to a string of murders blamed on a serial killer the media calls the Westside Ripper.
Then the story moves back and introduces Ava and Nathan.
Their lives may not involve murder yet, but they are already falling apart in quieter ways.
Nathan was once a promising professional tennis player. An injury ended that dream, and now he works as a tennis coach. He still watches old footage of himself playing, almost as if part of him is stuck in the life he thought he would have.
Ava works in real estate. She wants a better life, but the expensive homes she sees through work only make the gap between what she imagined and what she actually has feel larger.
And then there is their house.
Things keep breaking.
With a baby on the way, that is exactly what they do not need.
Their relationship also feels tired. They still care about each other, but both seem to wonder what happened to the exciting people they used to be.
That dissatisfaction is important because Episode 1 is not really just about catching a killer.
It is about two people who suddenly see a terrible situation as their chance to feel alive again.
Ava Is Already Obsessed With True Crime
Ava has another major interest: true crime.
She follows murder cases and listens to crime podcasts. While Nathan keeps looking backward at his tennis career, Ava gets pulled deeper into stories about killers and victims.
The Westside Ripper naturally catches her attention.
This obsession initially seems like background material. Plenty of people listen to true-crime podcasts.
But once Matt enters the picture, Ava’s hobby becomes something much more dangerous.
Matt Pierce Arrives at the Bartlett House
The Bartletts need plumbing work, which brings Matt Pierce, played by Tom Bateman, into their home.
Matt is charming and easygoing.
He also recognizes Nathan from his tennis days.
That immediately gives Nathan something he has been missing: admiration.
The two connect over tennis, and Nathan eventually starts spending time with him. Matt does not treat Nathan as a washed-up former player. He treats him like someone who once mattered.
You can understand why Nathan likes that.
But the show also starts placing little details around Matt that feel different once Ava begins putting them together.
He has a connection to Pomona.
There had been a previous violent incident near where he lived.
He has scratches on his arms.
And most importantly, there are those shoe covers.
A Night at the Bar Changes Everything
Nathan and Matt eventually go out for drinks.
At the bar, Nathan meets bartender Chloe Lake, played by Natalia Dyer. There is a little flirtation between them.
Nathan does not appear to turn it into an affair, but the encounter becomes far more important the next day.
Chloe is murdered.
The killing is linked to the Westside Ripper.
Suddenly, Nathan has been drinking with a murder victim only hours before her death.
That alone would be unsettling.
Then Ava notices something else.
How Does Ava Suspect Matt Is the Westside Ripper?
This is where Ava’s true-crime brain goes into overdrive.
Investigators have found a clue connected with the Chloe murder: shoe covers.
Ava recognizes them.
Matt uses similar covers while doing plumbing work.
She remembers the scratches on his body. She also thinks about his connection to Pomona, where another woman had previously been attacked and killed.
Individually, these details could have innocent explanations.
Together, they make Ava suspicious.
Very suspicious.
Episode summaries from Sky and other sources confirm that the shoe covers, scratches and Matt’s previous connection to Pomona are what lead Ava toward her theory that their friendly plumber may actually be the Westside Ripper.
Now imagine realizing that someone who has been inside your house may be a serial killer.
Most people would probably call the police.
Ava has another idea.
And this is where Based On A True Story really shows its hand.
Ava Doesn’t Want to Catch the Killer. She Wants a Podcast
Ava thinks Matt could be their way out.
Money problems?
Career problems?
Boring marriage?
What if they had something no other true-crime podcast could offer?
The actual killer.
Her idea is astonishingly reckless: instead of immediately turning Matt over to the police, she wants Nathan to approach him and convince him to participate in a podcast.
Think about how crazy that is.
They are potentially sitting on information that could help identify a murderer, and Ava’s first big plan is essentially, “Can we monetize this?”
That is also the joke at the heart of the series.
Ava has consumed so much true crime as entertainment that when real crime arrives at her own door, part of her immediately sees content.
Peacock’s official description of the series says a realtor, former tennis star and plumber join forces to capitalize on America’s obsession with true crime. That idea is planted right here in Episode 1.
Based On A True Story Episode 1 Ending Explained
Nathan is much less excited about Ava’s idea.
For understandable reasons.
They do not actually know for certain that Matt is a killer. And if Ava is right, approaching him could get both of them killed.
Still, Nathan eventually goes to meet Matt.
On a secluded beach, with Ava watching from a distance, Nathan finally confronts him.
He essentially puts the accusation directly in front of Matt:
Are you the Westside Ripper?
And then the episode ends.
It is a smart cliffhanger because Episode 1 has spent most of its runtime turning ordinary frustrations into something dangerous.
Nathan wanted respect.
Ava wanted excitement and financial security.
Matt may be offering them both.
The problem is that he might also be a murderer.
Is Matt Pierce Really the Killer?
Yes.
If you only want Episode 1 information and do not want the Season 1 mystery spoiled, stop here.
Matt Pierce is the Westside Ripper.
Episode 1 strongly points viewers toward him, while Episode 2 removes much of the uncertainty by showing more of Matt’s connection to Chloe’s murder. The larger Season 1 story then revolves around Ava and Nathan becoming dangerously involved with him rather than simply trying to expose him.
That changes the usual serial-killer mystery.
The important question stops being only:
Who is the killer?
It becomes:
What are Ava and Nathan willing to do now that they know?
That is a much more uncomfortable question.
And a more interesting one.
Why the First Episode Works So Well
The title The Great American Artform is not accidental.
The episode treats true crime almost like a modern entertainment industry.
Murders become documentaries.
Killers become famous.
Evidence becomes podcast material.
Ordinary listeners debate cases from their homes as if they are solving a puzzle.
Then the show takes two ordinary people and asks what might happen if they suddenly had access to the ultimate true-crime exclusive.
Ava’s response is ethically awful.
It is also completely consistent with the world the show is making fun of.
The episode is funny because the idea is ridiculous.
It is disturbing because the idea does not feel completely impossible.
Is the Show Based On A True Story Actually a True Story?
Despite the title, no, Based On A True Story is not a dramatization of one real murder case involving Ava, Nathan and Matt.
The main story and characters are fictional.
The real inspiration is broader.
Creator Craig Rosenberg explained that he was fascinated by the huge true-crime phenomenon in America, including podcasts, documentaries and fictional productions inspired by real crimes. He also pointed to the strange way killers can become celebrities through media attention.
That cultural trend gave him the central idea.
What if an ordinary married couple whose dreams had not worked out saw the true-crime boom as their opportunity to change their lives?
So the show’s title is intentionally playful.
It sounds like the familiar phrase placed at the beginning of movies about real events.
But the story itself is fiction commenting on our appetite for stories that really did happen.
Is Based On A True Story a Real Story?
The simplest answer is:
No. Ava Bartlett, Nathan Bartlett and their deal with the Westside Ripper are part of a fictional story.
However, the behavior the series satirizes is very real.
True-crime podcasts have become hugely popular.
Documentaries can turn decades-old cases into major entertainment events.
People sometimes know the names and personal histories of serial killers better than the names of their victims.
That is the uncomfortable reality behind the comedy.
The series does not need Ava and Nathan’s story to be true because the culture it is mocking already exists.
Where Can I Watch Based On A True Story?
In the United States, Based On A True Story streams on Peacock. Peacock currently lists both seasons of the series, including Season 1 Episode 1, The Great American Artform.
Streaming availability outside the United States depends on your country and current licensing agreements.
For example, the series has also been distributed through Sky in some markets. Digital purchase or rental options may be available through stores such as Apple TV or Prime Video depending on your region.
Because streaming rights change, it is worth checking the service available in your country before subscribing.
Who Plays the Main Characters in Episode 1?
The three people you really need to know are:
Kaley Cuoco as Ava Bartlett
A pregnant realtor and true-crime fan who becomes convinced she has identified the Westside Ripper.
Chris Messina as Nathan Bartlett
A former professional tennis player struggling with the loss of his old career and his place in life.
Tom Bateman as Matt Pierce
A friendly plumber who bonds with Nathan and soon becomes the center of Ava’s terrifying theory.
Peacock lists Cuoco, Messina and Bateman as the show’s principal cast.
Natalia Dyer also appears as Chloe Lake, whose murder becomes the event that pushes Ava toward discovering Matt’s secret.
What Episode 1 Is Really Saying About Ava and Nathan
The serial killer plot gets your attention, but the marriage may actually be the more important part of Episode 1.
Ava and Nathan are not happy with where life has taken them.
Nathan had athletic glory and lost it.
Ava spends her working life around lifestyles she cannot afford.
They are about to become parents.
Their home is falling apart.
Their relationship feels predictable.
Then Matt arrives and suddenly gives them something they have not had for a while:
a shared adventure.
Unfortunately, that adventure involves a suspected serial killer.
That is what makes the premise work.
If Ava and Nathan had wonderful careers, lots of money and a perfect marriage, Ava’s podcast idea would feel impossible to believe.
But desperation changes how people judge risk.
The show pushes that idea to a ridiculous extreme.
Why Doesn’t Ava Simply Call the Police?
This may be the biggest question viewers have after Episode 1.
The sensible answer would obviously be to give the information to investigators.
Ava instead sees an opportunity.
She believes direct access to the Westside Ripper could create a true-crime podcast unlike anything else available.
Money is part of the attraction.
So is excitement.
But there is something deeper happening.
Ava wants her life to feel important again.
Nathan does too.
The serial-killer discovery offers them something they have both been missing: a story in which they are no longer ordinary.
That choice is selfish, dangerous and ethically indefensible.
It is also the decision that powers the entire series.
Does Episode 1 Show Matt Killing Chloe?
The episode opens with Chloe’s murder, but it does not immediately present Matt’s identity to Ava and Nathan as an established fact.
Instead, the episode turns the murder into a trail of clues.
The shoe covers.
The scratches.
Pomona.
Matt’s unusual arrival in their lives.
By the ending, Ava has convinced herself that the pieces fit.
Nathan then has to do something much harder than listening to another theory.
He has to stand in front of Matt and ask.
That allows the episode to end exactly where the real danger begins.
Is Based On A True Story Worth Watching After Episode 1?
If you enjoy dark comedy mixed with crime and relationship drama, Episode 1 gives a strong idea of what the rest of the series will be like.
This is not a traditional detective show.
Ava and Nathan are not heroic investigators trying to bring justice to victims.
They are flawed people making increasingly terrible choices because they think crime might give them the life they wanted.
That makes the series less about solving a murder and more about what happens when true crime stops being something you hear through headphones and suddenly becomes part of your own life.
And by the final minutes of Based On A True Story Episode 1, Ava and Nathan have crossed the first major line.
They think they know who the Westside Ripper is.
They could turn him in.
Instead, they want to give him a microphone.
That is funny, horrifying, and exactly the kind of bad idea that makes you want to start Episode 2.
I am Jeremy Jahns – Your Cinematic Explorer
Immerse in movie reviews, Hollywood insights, and behind-the-scenes stories.