Netflix’s dark comedy thriller Sirens has returned with a vengeance for its highly anticipated second season, and it’s already making waves with its shocking twists and emotionally charged performances. The five-episode limited series, which captivated audiences with its first season in May 2025, dives deeper into the fractured sisterhood of Simone (Milly Alcock) and Devon DeWitt (Meghann Fahy), set against the opulent yet treacherous backdrop of Port Haven’s elite. Season 2, which premiered on June 18, 2025, picks up where the jaw-dropping finale of Season 1 left off, with Simone stepping into the role of the new Mrs. Kell, replacing her former mentor Michaela (Julianne Moore) as Peter Kell’s (Kevin Bacon) wife. But the real heart of the season lies in Simone’s transformation from a wounded, survival-driven assistant to a fierce, self-possessed woman who finally fights back — culminating in a devastating final confrontation with her sister Devon that leaves one of them bleeding, both physically and emotionally.

A New Simone Emerges

Season 1 introduced Simone DeWitt as a young woman running from a traumatic past, marked by her mother’s suicide, her father’s neglect, and a childhood in foster care. Her desperation for security led her to betray Michaela, her billionaire boss, and align herself with Peter, securing a life of wealth but at the cost of her relationships with both Michaela and Devon. Milly Alcock’s portrayal of Simone was lauded for its nuance, capturing her as a “swan” — graceful on the surface but frantically paddling beneath. In Season 2, Alcock takes Simone to new heights, portraying a character who is no longer just surviving but actively shaping her destiny.

“Simone is done being a pawn,” Alcock said in a recent interview with Town & Country. “She’s learned from Michaela’s mistakes and Peter’s manipulations. This season, she’s fighting for herself, not just for safety.” This evolution is evident from the opening episode, where Simone navigates her new role as Mrs. Kell with a calculated poise that unnerves even Peter. Gone is the naive assistant who worshipped Michaela; in her place is a woman who understands the game of power and is ready to play it.

The season delves into Simone’s internal conflict as she grapples with the guilt of betraying Michaela and the resentment she harbors toward Devon, who she feels abandoned her during their traumatic childhood. Alcock’s performance is electric, particularly in scenes where Simone confronts her past, including a haunting flashback to her time in foster care, where she faced implied abuse. These moments ground her seemingly ruthless decisions, reminding viewers that Simone’s actions stem from a deep need for control over a life that has often spiraled beyond her grasp.

Devon’s Desperate Mission

Meghann Fahy’s Devon remains the series’ emotional anchor, a scrappy, working-class woman burdened by her role as her father Bruce’s (Bill Camp) caregiver. Season 1 saw Devon travel to Port Haven to “rescue” Simone from what she believed was Michaela’s cult-like influence, only to realize that Simone’s choices were driven by survival, not brainwashing. The sisters’ tearful goodbye at the end of Season 1, as Devon returned to Buffalo alone, left audiences heartbroken, with many hoping for reconciliation in Season 2.

However, Season 2 begins with Devon more determined than ever to bring Simone back home. Bruce’s dementia has worsened, and Devon’s own struggles with alcoholism and a recent DUI have left her spiraling. Fahy’s portrayal of Devon is raw and unflinching, capturing her as a woman torn between love for her sister and resentment for the sacrifices she’s made. “Devon feels like she’s lost everything to save Simone,” Fahy told The Wrap. “But she can’t let go, because Simone is all she has.”

Devon’s return to Port Haven sets the stage for the season’s central conflict. She arrives uninvited at the Kell estate, now under Simone’s reign, and is shocked to see her sister fully entrenched in the world of wealth she once mocked. Devon’s attempts to appeal to Simone’s sense of family are met with cold resistance, as Simone accuses her of trying to drag her back to a past she’s fought to escape. The tension between the sisters simmers throughout the season, with each episode peeling back layers of their shared trauma and unspoken grievances.

The Final Confrontation

The season builds toward a climactic confrontation in the fifth episode, titled “Blood on the Cliff,” which has already sparked heated discussions among fans on platforms like Reddit and X. The episode takes place during the Kells’ annual Labor Day gala, a setting that mirrors the chaotic gala of Season 1 but with even higher stakes. Simone, now the lady of Cliff House, is hosting the event, exuding confidence but hiding her growing paranoia about Peter’s loyalty and Devon’s intentions.

Devon, meanwhile, has spent the season uncovering secrets about the Kell family, including a bombshell revelation about Peter’s first wife, Jocelyn, whose disfigurement was not the full story. Armed with evidence that could dismantle Simone’s new life, Devon crashes the gala, determined to force her sister to face the truth. What follows is a masterclass in emotional and physical intensity, with Alcock and Fahy delivering performances that are both heartbreaking and terrifying.

The confrontation unfolds on the cliff overlooking the ocean, a symbolic location that has loomed large throughout the series. Devon accuses Simone of becoming the very monster she once feared in Michaela, while Simone fires back, blaming Devon for abandoning her to foster care and expecting gratitude for her sacrifices. The argument turns physical when Devon grabs Simone’s arm, trying to pull her away from the cliff’s edge. In a moment of raw desperation, Simone shoves Devon, who stumbles and falls, cutting her head on a jagged rock. Blood stains the cliffside, and for a heart-stopping moment, it’s unclear whether Devon is alive.

The scene is a gut-punch, not only for its violence but for what it reveals about the sisters’ fractured bond. Simone’s horror at what she’s done is palpable, as she kneels beside Devon, sobbing and begging her to wake up. Devon, regaining consciousness, looks at Simone with a mix of pain and resignation, whispering, “You’re not her anymore.” The ambiguity of whether she means Michaela or the sister she once knew hangs heavy as the episode cuts to black.

Themes of Power and Sisterhood

Sirens Season 2 deepens the show’s exploration of power, class, and the lengths women go to survive in a world that often pits them against each other. Simone’s rise to power is both triumphant and tragic, as she gains control but loses the connections that once defined her. Devon’s journey, meanwhile, is one of self-discovery, as she learns to let go of her need to save Simone and find her own path.

The series also continues its critique of wealth and privilege, with Port Haven serving as a microcosm of a society where loyalty is bought and betrayal is inevitable. The cliff, a recurring motif, symbolizes the precarious edge on which all the characters stand, one misstep away from losing everything.

Will There Be a Season 3?

The shocking ending has left fans clamoring for answers, with many speculating about a potential third season. Showrunner Molly Smith Metzler has remained coy, telling Variety, “We always planned Sirens as a limited series, but the story of Simone and Devon is far from over. There’s more to explore if the audience wants it.” Alcock and Fahy have expressed enthusiasm for returning, with Alcock noting, “I’d love to see where Simone goes next — whether she rises or falls.”

For now, Sirens Season 2 stands as a bold, unflinching chapter in a story that refuses to shy away from the messiness of human relationships. Milly Alcock’s Simone has fought back, but at what cost? And with Devon’s blood on her hands, can the sisters ever find their way back to each other? As the waves crash against the cliffs of Port Haven, one thing is certain: Sirens has cemented its place as one of Netflix’s most compelling dramas.

All episodes of Sirens Season 2 are now streaming on Netflix.