How to Watch Long Bright River Online in 4K

If you want to watch Long Bright River, the acclaimed Peacock crime drama miniseries starring Amanda Seyfried, this complete guide covers everything you need — what the show is, who created it, what it is about, where to stream it, and how to watch in full 4K quality with InfinityTV.

What is Long Bright River?

Long Bright River is an American crime drama series created by Nikki Toscano and based on the 2020 novel of the same name by Liz Moore. The eight-episode series premiered on Peacock on March 13, 2025. It stars Amanda Seyfried as a Philadelphia police officer searching for her missing sister while working in Kensington, one of the most devastated neighborhoods in the American opioid crisis.

The series was reviewed by Variety as a "stellar serial killer mystery" and by NPR as a "heartfelt mystery," and represents one of the most critically praised limited series of 2025 on Peacock.

Who created Long Bright River?

Nikki Toscano created the series, which marks her first creator credit on a major television project. Toscano has previously worked as a writer and producer on series including Hannibal and Quantico. The Hollywood Reporter noted that nothing in her previous work is quite like Long Bright River, and that the series represents a significant creative step for her as a creator.

Liz Moore is the author of the source novel, published in 2020. Moore is an American novelist whose work has been praised for its combination of literary quality and crime fiction plotting. Long Bright River (2020) was a national bestseller and a New York Times Notable Book, praised by critics for its portrait of Kensington, Philadelphia, during the opioid epidemic and for the depth of its two sisters' relationship at the story's center.

Who stars in Long Bright River?

• Amanda Seyfried as Mickey Fitzpatrick — a Philadelphia police officer working in Kensington whose younger sister has gone missing. Seyfried is known for Mamma Mia!, Les Misérables, Mean Girls, Mank, and the Hulu limited series The Dropout (2022), for which she won a Golden Globe and Emmy Award. Long Bright River continues her acclaimed work in prestige limited series.
• Nicholas Pinnock as Truman Dawes — Mickey's former patrol partner
• Ashleigh Cummings as Kacey Fitzpatrick — Mickey's missing sister
• Callum Vinson
• John Doman — known for The Wire and Gotham
• Dash Mihok
• Britne Oldford
• Matthew Del Negro
• Harriet Sansom Harris
• Patch Darragh
• Perry Mattfeld

What is Long Bright River about?

Long Bright River is set in Kensington, Philadelphia — one of the neighborhoods most severely affected by the American opioid epidemic. The series follows Mickey Fitzpatrick (Amanda Seyfried), a police officer who patrols a beat she knows intimately: the streets where she grew up, which are now among the most concentrated sites of opioid addiction in the United States.

Mickey's younger sister Kacey (Ashleigh Cummings) has struggled with addiction and lives on those same streets. When Kacey disappears and women are being murdered in the neighborhood, Mickey becomes consumed by the parallel investigation — official and unofficial — of what happened to her sister.

The show operates on two registers simultaneously: as a crime procedural about a serial killer working in a specific community, and as a family drama about two sisters whose lives diverged dramatically — one into law enforcement, the other into addiction — and the complicated love and guilt and responsibility that bind them. Liz Moore's novel was praised for holding both registers in balance, and the television adaptation, according to critical reviews, maintains that balance.

Kensington and the opioid crisis

Kensington — a neighborhood in north Philadelphia — became internationally known during the 2010s and 2020s as one of the most severe sites of the American opioid epidemic. At its peak, the stretch of Kensington Avenue near Somerset Street became one of the largest open-air drug markets in the United States. The human cost — addiction, overdose deaths, homelessness, family disruption — is a documented public health catastrophe.

Long Bright River does not use Kensington as backdrop or set decoration. The neighborhood's specific reality is the moral and dramatic center of the series: a place where people Mickey knows and has watched since childhood are living through addiction, where the dead are not strangers, and where policing exists in a context of community history that is entirely different from the abstracted crime drama of most television procedurals.

NPR's review noted that the show is "heartfelt" precisely because it refuses to be clinical about Kensington — the people there are people, not symbols of a policy failure, and the series insists on their individual humanity even while showing the structural conditions that surround them.

Amanda Seyfried in Long Bright River

Amanda Seyfried has built one of the more interesting prestige limited series careers of the 2020s alongside her film work. Her Emmy Award-winning performance in The Dropout (as Elizabeth Holmes, the founder of Theranos) showed a range and intensity that her earlier film work — largely romantic comedies and musicals — had not fully revealed. Long Bright River is tonally very different from The Dropout but makes comparable demands: Mickey Fitzpatrick is a woman carrying guilt, grief, professional obligation, and personal history simultaneously, and the role requires the specific skill of showing the weight of all of those things without stating them directly.

Variety described Seyfried's performance in Long Bright River as one of the best things she has done on screen.

How to watch Long Bright River in 4K — step by step

1. Open Peacock. Long Bright River is a Peacock Original, available on Peacock wherever the service operates.
2. Confirm your Peacock subscription. Peacock offers a free tier with ads and a paid Premium plan. For the best streaming quality and full ad-free access, the Peacock Premium Plus plan is recommended.
3. Check your internet connection. Streaming at the highest quality requires a stable connection of at least 25 Mbps. Test your speed before you start.
4. Select a compatible device. Peacock is available on Smart TVs, Amazon Fire TV, Roku, Apple TV, Xbox, PlayStation, smartphones, and tablets.
5. Use InfinityTV. InfinityTV brings your Peacock content together with InfinityTV's own library of 150,000+ Movies & Series and 22,000+ live TV channels from around the world — one app, everything in one place.
6. Watch all eight episodes in sequence. The series tells a continuous story with accumulating emotional weight. Starting from the first episode is essential.

What to watch after Long Bright River

If the combination of police procedural, family drama, and social realism in Long Bright River appeals to you:

• Mare of Easttown (HBO) — Kate Winslet as a Pennsylvania detective investigating a murder in her small town. One limited series season, widely considered one of the best limited series of the past decade.
• The Wire (HBO) — five seasons of the definitive police drama about Baltimore, addiction, and institutions. John Doman, who appears in Long Bright River, was also in The Wire.
• Sharp Objects (HBO) — Amy Adams as a journalist returning to her Missouri hometown to cover murders. A single limited series season, based on Gillian Flynn's novel.

For more of the best series streaming right now, see our guide to top series to watch in 2025 and the New Yorker's best TV shows of the year. Long Bright River is listed on IMDb with critical and audience ratings.

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Frequently asked questions

Where can I watch Long Bright River? Long Bright River is available on Peacock. You can also access Peacock content through InfinityTV, which brings your favourite streaming titles alongside 22,000+ live channels and 150,000+ Movies & Series in one app.

Is Long Bright River based on a book? Yes. Long Bright River is based on Liz Moore's 2020 novel of the same name, which was a national bestseller and a New York Times Notable Book.

Who stars in Long Bright River? The series stars Amanda Seyfried as Philadelphia police officer Mickey Fitzpatrick, with Nicholas Pinnock as her former partner Truman Dawes and Ashleigh Cummings as her missing sister Kacey.

Where is Long Bright River set? The series is set in Kensington, Philadelphia — a neighborhood severely impacted by the American opioid epidemic, which is central to the show's story and moral setting.

How many episodes is Long Bright River? Long Bright River consists of eight episodes, all available on Peacock from March 13, 2025.

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