Sweetpea Ending Explained: Does Rhiannon Get Caught for the Murders?

Sky’s dark comedy thriller follows Rhiannon Lewis, a woman who spirals into murder after years of being ignored and mistreated. As she kills her way through rage and trauma, the finale leaves viewers questioning the fate of key characters and sets up an intriguing possibility for season 2. Here's a deep dive into the twisted ending and what could happen next.

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Sky’s Sweetpea is a dark comedy that takes you on a wild ride with Rhiannon Lewis, a woman who’s had enough of being ignored. Her life spirals out of control after her father’s sudden death, and things only get darker from there. Sweetpea is the perfect show for spooky season, with a killer storyline, twists, and shocking moments that leave you craving more.

If you’ve just finished the show and are scratching your head over the ending, let’s break it down in detail.

What Happens to Julia in Sweetpea?

In the final episode, Julia and Rhiannon’s friendship takes a dark turn. After they successfully pin the blame for two murders on Marcus, Julia, and Rhiannon walk free from police custody. But their “freedom” comes at a cost. Julia’s relationship with Rhiannon grows more complicated after their night out. She borrows Rhiannon’s bank card to buy drugs, but then, instead of coming back home, she vanishes, leaving Rhiannon worried and confused.

The key detail? Julia uses Rhiannon’s card for a large sum of money. She may have finally decided to cut ties and escape. Julia’s disappearance suggests she wants out for good, away from the chaos Rhiannon has dragged her into. Whether it’s to clear her head or flee for good, she clearly doesn’t want to be under Rhiannon’s influence anymore. It’s also possible that Julia felt so terrible about herself after being around Rhiannon that she couldn’t face her anymore. Either way, Julia’s escape from town feels like a smart move—one that might save her life.

Does Rhiannon Get Caught for the Murders?

Rhiannon (Ella Purnell) kidnapped Julia (Nicole Lecky) and held her hostage in her own home before deciding to frame her abusive partner in Sweetpea

The short answer: not yet. Over the course of Sweetpea, Rhiannon kills three men—Ryan, Mike, and Marcus (Julia’s fiancé). But does she face justice? Not really, at least for now.

After she kills Marcus by pushing him off a ledge, the police bring Rhiannon and Julia into custody. Instead of telling the truth, the duo spins a convincing story: Marcus had kidnapped Julia, and when Rhiannon came to save her, he slipped and fell to his death. With Marcus’ DNA on the knife and his threatening messages to Rhiannon, the police buy their story.

However, Marina, a junior detective, doesn’t buy it. She suspects that Rhiannon is behind all the murders, but her suspicions are dismissed by her boss. Rhiannon and Julia walk free, but it’s far from over for Rhiannon. Marina’s hot on her tail and breaks into Rhiannon’s house, where she discovers CCTV footage showing Rhiannon slashing Julia’s tires. Though Marina can’t use this footage legally (because she obtained it by breaking in), she knows Rhiannon will kill again. And Marina is waiting for that moment.

Where Does Julia Go?

Julia is kidnapped by Rhiannon as she plots her revenge for bullying her at school

After being freed from the police station, Julia crashes at Rhiannon’s place, unsure of where else to go. The two go out to celebrate their freedom, but the night takes a turn. Julia borrows Rhiannon’s bank card and later books a flight using it.

Rhiannon doesn’t realize what’s happening at first, but viewers can see that Julia wants out. Julia has been through hell—kidnapped by Rhiannon and used to frame Marcus for multiple murders. While she’s grateful to be free of Marcus, she’s unsettled by Rhiannon’s behavior and wants to escape her influence. The next morning, Rhiannon receives a bank notification about the flight, and it becomes clear: Julia has no intention of returning.

What’s Going on With Marina?

Marina is one of the most intriguing characters in Sweetpea. She’s the only one who sees through Rhiannon’s lies, and she’s determined to catch her. After finding the CCTV footage of Rhiannon slashing Julia’s tires, Marina confronts Rhiannon. However, she knows that she can’t use the footage legally because she obtained it by breaking into Rhiannon’s home.

Still, Marina isn’t backing down. She believes that Rhiannon will kill again, and she’s waiting for the moment when she can catch her in the act. Their confrontation ends with Rhiannon threatening Marina, but Marina remains unfazed. She knows that it’s only a matter of time before Rhiannon slips up.

Will Marina Catch Rhiannon?

Junior detective Marina discovers Rhiannon is behind the murders

Detective Marina has been quietly observing Rhiannon, and she’s got the pieces to put it all together. Marina has CCTV footage of Rhiannon slashing Julia’s tires, which shows the knife Rhiannon used. Marina’s suspicion of Rhiannon’s involvement in the murders grows, but she doesn’t act on it just yet. It seems she’s waiting for a big move—maybe Rhiannon’s next kill—before she makes her case.

Rhiannon, on the other hand, underestimates Marina, assuming she’s too weak or insignificant to stop her. But Marina is patient, and with her boss not taking her seriously, she’s biding her time for the perfect moment to bring Rhiannon down. The tension between these two characters hints at a showdown in a possible second season.

AJ, Rhiannon’s coworker and love interest, unknowingly steps into dangerous territory. After they spend the night together, he reveals he’s got a new source on the police force who sent him a picture of the murder weapon—a knife that matches Rhiannon’s dad’s lock knife. When Rhiannon sees the photo, both she and AJ realize the truth: Rhiannon is the killer.

Things take a deadly turn when AJ calls her a “monster.” Rhiannon, who’s always seen herself as a victim, snaps. Her killer instinct kicks in, and she stabs AJ, telling him everything will be fine. But it’s clear nothing is fine as she cradles his dying body, only for her sister to walk in on the scene. The episode ends on this shocking note, leaving viewers questioning what will happen next.

Rhiannon’s ex-boyfriend, Craig, plays a crucial role in the ending. After lying to the police to protect her, Craig uses the situation to his advantage, blackmailing Rhiannon into signing over her father’s business. She signs the agreement without reading it carefully, leaving her vulnerable to Craig’s control. Craig’s actions make it clear that he’s not just a former lover—he’s a manipulator who wants to take over her life, even if it means exploiting her darkest secrets.

What Happens Between Rhiannon and AJ?

AJ is one of the few characters in Sweetpea who acknowledges Rhiannon for who she is. Throughout the series, their bond deepens, and after Rhiannon breaks up with Craig, she spends the night with AJ. The next morning, AJ reveals that he has a police source who sent him a photo of the murder weapon—Rhiannon’s dad’s knife.

The moment AJ shows Rhiannon the photo, things start to click for him. He realizes that the knife belongs to Rhiannon, and worse, that she’s behind the murders. As AJ starts to panic, Rhiannon tries to calm him down, but when he calls her a “monster,” it’s game over for AJ. In a fit of rage, Rhiannon stabs him multiple times, desperately trying to comfort him as he dies in her arms.

And just when you think things can’t get worse, Rhiannon’s sister walks in. The season ends on this cliffhanger, leaving us to wonder if Rhiannon will kill her sister too or if she’ll be caught.

Who Was AJ’s Police Source?

AJ mentions that his police source is a “he,” but we don’t know for sure who it is. Many viewers suspect that the source could actually be Marina, who might have been using AJ to get closer to Rhiannon. After all, Marina has been suspicious of Rhiannon from the beginning, and sending AJ the photo of the knife could have been her way of pushing Rhiannon to make a mistake.

If Sweetpea gets a second season, we’ll likely get more answers about AJ’s mysterious source.

Why Did AJ Have to Die?

Calam Lynch plays AJ (left) in new Sky series Sweetpea

AJ’s death is one of the most heartbreaking moments of Sweetpea. Rhiannon had real feelings for him, but once AJ connected the dots and realized that she was a killer, he had to go. Rhiannon’s anger and desperation led her to stab AJ, and his death will likely be the turning point for Rhiannon’s downward spiral.

With AJ gone, Rhiannon has no one left to turn to. She’s already killed multiple people, and AJ’s death will only push her further into the darkness. If there’s a second season, we’ll likely see Rhiannon grappling with the consequences of AJ’s murder, and possibly even becoming a full-fledged serial killer.

Will There Be a Sweetpea Season 2?

While there’s no official announcement for a second season of Sweetpea, the ending certainly sets the stage for one. Rhiannon’s mental state is fragile after AJ’s death, and with Marina on her tail, it’s only a matter of time before the truth comes out. Will Rhiannon spiral further into madness, or will she turn herself in? There are many unanswered questions, including Julia’s whereabouts and Marina’s next move. The show leaves us on a cliffhanger, but it’s clear that Rhiannon’s story isn’t over yet.

If Sweetpea returns for season 2, we can expect more twists, darker moments, and a deeper dive into Rhiannon’s psyche. One thing’s for sure—Rhiannon isn’t done with her murderous ways, and Marina won’t rest until she catches her.

Sweetpea is a show that mixes dark humor with intense drama, and it does so brilliantly. Rhiannon’s transformation from an invisible woman to a killer makes for a gripping story, and the ending leaves us with just enough questions to keep us wanting more. Whether you’re drawn in by the murders, the complex characters, or the cliffhanger, Sweetpea is a must-watch for fans of dark comedies with a twist.

So, will Rhiannon get away with her crimes? Only time will tell. Keep your fingers crossed for season 2, and in the meantime, rewatch the series to catch any details you might have missed the first time around!

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