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Sirens: Release date, cast, plot and trailer for Meghann Fahy Netflix series

Everything you need to know.

Meghann Fahy as Devon, sat on the front steps of a house, holding what looks like a vegetable basket. She's wearing shorts and a tank top. She has an angry expression on her face. There are purple flowers on either side of the steps.

Macall Polay/Netflix

Published: Wednesday, 30 April 2025 at 12:10 pm

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Meghann Fahy is booked and busy! Following on from 2024 Netflix smash hit The Perfect Couple and recent thriller Drop, she's set to return to screens in Sirens, a Netflix dark comedy that will undoubtedly be another storming success for the streamer.

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Fahy plays a woman called Devon who goes to visit her younger sister Simone at her place of work following their dad's upsetting health diagnosis. But it's her sibling's dynamic with her very rich boss that she ultimately finds herself worrying about.

"This story has a lot of teeth," said creator and executive producer Molly Smith Metzler (via Tudum), who also wrote the 2011 play on which it's based.

"There are real moments of drama, and it’s going to make people uncomfortable. Operatic is a word I like to use to describe it. It’s a true dark comedy – and it’s got a Greek mythology vibe."

But when can you watch it? And who else appears in the cast?

Read on for everything you need to know about Sirens.

Sirens release date: When will it air?

You can watch the series from Thursday 22nd May.

There are five episodes in total.

Sirens cast: Who stars?

Milly Alcock as Simone, wearing a pink floral dress and white headband stood next to Julianne Moore as Michaela, wearing a white halterneck dress and holding a blue biscuit. They are attending some sort of gathering or function. A couple of other women can be seen talking in the background. There are flowers and food

Milly Alcock as Simone and Julianne Moore as Michaela. Netflix

Meghann Fahy, who you probably know from The Perfect Couple, The White Lotus and The Bold Type, stars as Devon, who is deeply concerned about her sister's relationship with her boss, a philanthropist and the wife of a billionaire who may or may not be running some sort of cult.

Milly Alcock (House of the Dragon, Supergirl: Woman of Tomorrow) plays Devon's sister Simone and Julianne Moore (May December, Mary & George) plays Simone's boss Michaela.

Kevin Bacon plays Michaela's husband Peter.

The rest of the cast includes:

Sirens plot: What's it about?

Meghann Fahy as Devon wearing black shorts and a tank top, her hair tied up, standing next to Milly Alcock as Simone wearing a pink floral dress and white headband. There's a white fireplace in the background with ornaments on the mantlepiece and Japanese-inspired paintings on the walls.

Meghann Fahy as Devon and Milly Alcock as Simone. Macall Polay/Netflix

"Devon thinks her sister Simone has a really creepy relationship with her new boss, the enigmatic socialite Michaela Kell," reads the official synopsis.

"Michaela’s cultish life of luxury is like a drug to Simone, and Devon has decided it’s time for an intervention, but she has no idea what a formidable opponent Michaela will be.

"Told over the course of one explosive weekend at the Kells’ lavish beach estate, Sirens is an incisive, sexy, and darkly funny exploration of women, power, and class."

Sirens trailer: When can I watch it?

You can enjoy the trailer right now.

Watch it below.

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Sirens will air on Netflix – sign up for Netflix from £5.99 a month. Netflix is also available on Sky Glass and Virgin Media Stream.

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Check out more of our Drama coverage or visit our TV Guide and Streaming Guideto find out what's on. For more from the biggest stars in TV, listen to The Radio Times Podcast.

Authors

A head and shoulders shot of Abby Robinson. She is in front of a grey background, looking at the camera and smiling. She wears a black zipped-up jacket with an elaborate gold and maroon design

Abby RobinsonDrama Editor

Abby Robinson is the Drama Editor for Radio Times, covering TV drama and comedy titles. She previously worked at Digital Spy as a TV writer, and as a content writer at Mumsnet. She possesses a postgraduate diploma and a degree in English Studies.

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