How to Watch The Better Sister Online in 4K

If you want to watch The Better Sister, the Prime Video thriller limited series starring Jessica Biel and Elizabeth Banks, 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 The Better Sister?

The Better Sister is an American thriller limited series created by Olivia Milch, based on the 2019 novel of the same name by Alafair Burke. The series premiered on Amazon Prime Video on May 29, 2025. It stars Jessica Biel and Elizabeth Banks as two estranged sisters whose lives are thrown together after the murder of the man they both loved.

The show was co-showrun by Regina Corrado, with Milch and Corrado serving as executive producers alongside others. It represents one of the more high-profile thriller limited series of 2025 on Prime Video, with a cast and premise that generated substantial pre-release interest.

Who created The Better Sister?

Olivia Milch is the creator and showrunner of The Better Sister. Milch is known as a writer and producer in the film world, with credits including Dude (2017, Netflix) and Ocean's 8 (2018, co-writer). The Better Sister is a significant step in her television career, creating and leading a full limited series adaptation.

Alafair Burke is the author of the source novel, published in 2019. Burke is an American crime novelist known for her legal thrillers and procedurals. The Better Sister (2019) was one of her most commercially and critically successful standalone novels. Burke is also a law professor, and her legal background informs the precision of the thriller's plot mechanics.

Who stars in The Better Sister?

• Jessica Biel as Chloe — one of the two sisters at the center of the story. Biel is known for 7th Heaven, Ulee's Gold, The Book of Love, and the Amazon Prime Video series The Sinner (in which she starred and also executive-produced), which introduced her to a wider prestige television audience.
• Elizabeth Banks as Nicky — the other sister. Banks is known for The Hunger Games franchise (Effie Trinket), Pitch Perfect, Modern Family, and as a director (Pitch Perfect 2, Charlie's Angels). The Better Sister is a significant dramatic departure from much of her best-known work.
• Corey Stoll as Adam — the man both sisters loved, whose murder sets the story in motion. Stoll is known for House of Cards, The Strain, Ant-Man, and Midnight in Paris.
• Maxwell Acee Donovan
• Kim Dickens as Detective Nancy Guidry — the detective investigating Adam's murder. Dickens is known for Fear the Walking Dead and Gone Girl.
• Gloria Reuben
• Matthew Modine
• Lorraine Toussaint
• Bobby Naderi
• Gabriel Sloyer

What is The Better Sister about?

The Better Sister centers on two estranged sisters with a painful shared history. Chloe (Jessica Biel) and Nicky (Elizabeth Banks) were both, at different points, involved with the same man: Adam (Corey Stoll). Chloe eventually married him. Nicky divorced him before that.

When Adam is murdered, the investigation into his death forces the two sisters — who have been estranged — back together. Both had reasons to want him gone. Both know things about him that the other may not. The murder investigation becomes a story about the sisters' history, their shared secrets, and the competing loyalties and resentments that define their relationship.

The show operates in the tradition of domestic noir: the thriller premise is rooted in the specific dynamics of family relationships — love, competition, grief, loyalty, and betrayal — rather than in institutional conspiracy or external danger. The central question is not just who killed Adam, but what Chloe and Nicky each knew about who he really was.

Jessica Biel and Elizabeth Banks: why this pairing works

The chemistry between Jessica Biel and Elizabeth Banks is the show's central dramatic resource. Both actors bring established personas to their roles that the show uses and subverts:

Jessica Biel has built a reputation across The Sinner for playing women under extreme psychological pressure — women whose composed exteriors barely contain what is happening beneath. Chloe in The Better Sister fits this pattern: she is a woman who has constructed a functional life around a marriage that contained things she is only now fully reckoning with.

Elizabeth Banks, coming from a career that includes primarily comedies and franchise films, brings unexpected registers to Nicky. Nicky is the sister who left — who chose a different life — and whose return brings a perspective on Chloe's marriage that Chloe cannot see from the inside. The choices Banks makes in the performance are against type in ways that reviewers found largely effective.

The relationship between the two characters — the competition, the affection, the history, the current estrangement — is the architecture around which the thriller plot is built. A limited series format works well for this: it gives the character dynamics enough space to develop without the procedural padding of an ongoing series.

How to watch The Better Sister in 4K — step by step

1. Open Amazon Prime Video. The Better Sister is a Prime Video Original, available on Amazon Prime Video wherever the service operates.
2. Confirm your Prime Video subscription. Amazon Prime Video is included with Amazon Prime membership. The Better Sister is available in 4K Ultra HD on supported devices and plans.
3. Check your internet connection. Prime Video 4K streaming requires a stable connection of at least 15 Mbps, though 25 Mbps is recommended for consistent quality. Test your speed before you start.
4. Select a 4K-capable device. Prime Video 4K is available on Fire TV Stick 4K, Roku Ultra, Apple TV 4K, PlayStation 5, Xbox Series X, and 4K Smart TVs with the Prime Video app.
5. Enable HDR. Prime Video 4K content is available in HDR10 and Dolby Vision on compatible devices. Enable HDR in your television settings for the best picture quality.
6. Use InfinityTV. InfinityTV brings your Prime Video 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.
7. Watch the episodes in sequence. The Better Sister is a limited series with a thriller arc that builds across episodes. Starting from the first episode is essential for the full effect of the character reveal structure.

Alafair Burke's novel vs. the Prime Video adaptation

Alafair Burke's 2019 novel is one of her best-received works — a legal thriller with sharp characterization and a genuine twist structure. The novel's central premise (two sisters, one murdered man, estrangement and forced reunion) is maintained in the adaptation, though the television format allows for expansion of secondary characters and a more developed exploration of the sisters' relationship history.

Burke's background as a law professor shows in the original novel's precision about legal procedure and evidence — elements that translate into the television adaptation's procedural subplot involving Detective Nancy Guidry's investigation.

What to watch after The Better Sister

If you enjoy the domestic noir of The Better Sister:

• The Sinner (USA/Netflix) — Jessica Biel's previous prestige limited series, which she also executive-produced. The first season is the strongest and is a model of the confined psychological thriller.
• Big Little Lies (HBO) — three women, one murder, one affluent coastal community. Two seasons, exceptional ensemble.
• Sharp Objects (HBO) — Amy Adams in Jean-Marc Vallée's miniseries about a journalist returning to her hometown to cover murders. A single limited series season, deeply effective.

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. The Better Sister is listed on IMDb.

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Frequently asked questions

Where can I watch The Better Sister? The Better Sister is available on Amazon Prime Video. You can also access Prime Video content through InfinityTV, which brings your favourite streaming titles alongside 22,000+ live channels and 150,000+ Movies & Series in one app.

Who created The Better Sister? The Better Sister was created by Olivia Milch (co-writer of Ocean's 8), based on the 2019 novel by Alafair Burke. Regina Corrado served as co-showrunner.

Is The Better Sister based on a book? Yes. The Better Sister is based on Alafair Burke's 2019 novel of the same name. Burke is an American crime novelist and law professor.

Who stars in The Better Sister? The main cast includes Jessica Biel as Chloe, Elizabeth Banks as Nicky, Corey Stoll as Adam, and Kim Dickens as Detective Nancy Guidry.

What is The Better Sister about? Two estranged sisters — Chloe (Jessica Biel) and Nicky (Elizabeth Banks) — are forced together after the murder of Adam (Corey Stoll), a man they both, at different times, loved and married. The show follows the murder investigation and what it reveals about the sisters' shared history.

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