7 Shocking Twists That Changed Joe Goldberg Forever In You Season 4
The fourth season of Netflix's psychological thriller You delivered its most mind-bending and controversial narrative to date, completely redefining the show's core premise. The series, which aired in two parts in early 2023, transported Joe Goldberg—now operating under the alias Professor Jonathan Moore—from the suburban nightmare of Madre Linda to the sophisticated, often-hollow world of London's elite. This time, however, the hunter became the hunted, forcing Joe to navigate a new kind of obsession as he tried to unmask the mysterious "Eat the Rich" killer who was stalking his new social circle. This deep dive, updated for December 2025, explores the biggest reveals, the new dynamic, and the terrifying final state of Joe Goldberg.
The season successfully flipped the script, making the audience question everything they thought they knew about Joe's perspective. The shift from a stalker narrative to a murder mystery was a bold move that culminated in a shocking psychological reveal, setting the stage for a final, terrifying chapter in Joe's story alongside his new partner, the wealthy and morally ambiguous Kate Galvin.
The New Circle: Cast and Character Profiles for the London Elite
Season 4 introduced an extensive ensemble of wealthy, privileged, and often toxic London socialites, creating a perfect hunting ground for both Joe and the mysterious killer. The core cast featured both returning favorites and pivotal new entities:
- Penn Badgley as Joe Goldberg / Professor Jonathan Moore: Joe flees to Europe following Marienne, taking on a new identity as a literature professor in London. He is determined to change his ways but finds himself embroiled in a new murder mystery, this time as a reluctant detective.
- Tati Gabrielle as Marienne Bellamy: The object of Joe's affection from Season 3. She is in Paris, determined to stay away from Joe, but becomes a central figure in his psychological breakdown in the season's second half.
- Charlotte Ritchie as Kate Galvin: An intelligent, intensely private, and protective art gallery director. She is initially hostile toward Joe but becomes his new obsession and eventual partner. She is the daughter of a powerful, ruthless billionaire.
- Ed Speleers as Rhys Montrose: A charismatic, ambitious author and aspiring politician who comes from a humble background. He is initially presented as a friend and confidant to Joe, but his true role becomes the season’s biggest twist.
- Tilly Keeper as Lady Phoebe Borehall-Blaxworth: A sweet-natured, wealthy socialite and influencer whose life is constantly scrutinized by the press. She is Kate's closest friend.
- Lukas Gage as Adam Pratt: An American expat and wealthy heir known for his excessive partying, hedonism, and questionable business ventures.
- Stephen Hagan as Malcolm Harding: Joe's privileged, arrogant, and drug-addicted colleague who first introduces Joe to the London elite.
The Shocking 'Eat the Rich' Killer Twist and Joe's Dissociation
The first half of You Season 4 was structured as a classic whodunit. Joe, trying to live a quiet life, is drawn into a series of murders targeting his new circle of wealthy friends. The killer sends Joe taunting messages, making him believe he is being framed or stalked. This reversal of roles—Joe being the prey—was the unique hook of the season.
The Rhys Montrose Reveal
The central mystery revolved around unmasking the "Eat the Rich" killer. All signs pointed to Rhys Montrose, the charming, self-made author who was running for Mayor of London. Joe believed he and Rhys were intellectual equals, two men from humble beginnings who saw the corruption in the elite. The twist came in Part 2: Rhys was indeed the killer, but he was not real.
This massive reveal established that Joe had suffered a complete psychological break. Rhys Montrose was a severe manifestation of Joe's own murderous, dissociated self—a dark side that Joe had repressed following the events of Season 3 and his flight from the US. Joe was the "Eat the Rich" killer all along. He had been hallucinating his interactions with Rhys, who was the physical embodiment of his compulsion to kill and stalk.
Marienne's Fate and the Darkest Cage
The dissociation twist was further solidified through the storyline with Marienne Bellamy. Joe had kidnapped Marienne in Paris and held her captive in a glass cage in London, a fact he completely blocked out of his conscious mind. He believed he had let her go. Marienne, however, manages to escape by faking her own death with the help of Nadia, a bright student of Joe's.
This storyline was crucial. It forced Joe to confront the reality that his "good" self (Professor Jonathan Moore) was a lie, and his darkest impulses (Rhys Montrose) were still in control. The realization of his actions leads Joe to a desperate, self-destructive decision.
The Controversial Ending: Joe and Kate's Dark Fairytale
The finale of Season 4 delivered a powerful and polarizing conclusion that fundamentally changed the show's dynamic and Joe's future.
Joe's Suicide Attempt and Confession
Overwhelmed by the realization that he is the killer and cannot control his nature, Joe attempts to kill himself by jumping off a bridge. He is rescued and hospitalized. While recovering, he finally confesses the full truth—his real name, his past murders, and his entire history—to Kate Galvin.
Kate's Acceptance and Power Move
In the show's most shocking turn, Kate not only accepts Joe's dark past but embraces him. Kate is revealed to be the heiress to the massive fortune of her late, powerful father, Tom Lockwood, whom Joe killed in the finale. With her newfound, virtually limitless resources, Kate uses her power and influence to cover up every one of Joe's crimes. She has the evidence wiped, the narrative spun, and Joe's identity legally restored.
The Return to New York and the New Status Quo
The season ends with Joe Goldberg and Kate Galvin moving back to New York City. Joe is no longer a struggling professor or a man on the run. He is now a wealthy, powerful, and publicly-rehabilitated figure, living a "philanthropic" life with Kate. He is thriving, having reclaimed his true, murderous identity without the need for an alias or a glass cage. The final shot is Joe looking out over the city, now fully accepting his dark nature, with Kate by his side as his powerful enabler.
This ending is a profound shift for the series. Joe is no longer a lone wolf; he now has a powerful partner who is complicit in his crimes and has the means to protect him from consequences. This setup leaves Joe more dangerous and untouchable than ever before, promising an even darker and more high-stakes narrative for the final, announced season of the series.
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