The Better Sister is an American thriller television limited series created by Olivia Milch and starring Jessica Biel, Elizabeth Banks, Corey Stoll, and Maxwell Acee Donovan. Based on the 2019 novel by Alafair Burke, it premiered on May 29, 2025.
Two estranged sisters, Chloe (Jessica Biel) and Nicky (Elizabeth Banks), one married to and the other divorced from the same man, Adam (Corey Stoll), are forced together after he is murdered.
The series is an adaptation by Olivia Milch and Regina Corrado of the 2019 novel The Better Sister by Alafair Burke. Burke acts as a consultant on the series which has Elizabeth Banks as co-star and executive producer via Brownstone Productions, and Jessica Biel as co-star and executive producer via Iron Ocean Films, along with Michelle Purple. Craig Gillespie will direct in addition to being an executive producer, along with Annie Marter through Fortunate Jack Productions. The series is a co-production between Tomorrow Studios and Amazon MGM Studios, with Marty Adelstein, Becky Clements, and Alissa Bachner of Tomorrow Studios executive producing.
In June 2024, Corey Stoll, Maxwell Acee Donovan, Gabriel Sloyer, Kim Dickens, and Bobby Naderi joined the cast.
Filming began in New York in June 2024, and wrapped in October 2024.
The series was released on Amazon Prime Video with all eight episodes on May 29, 2025.
The review aggregator website Rotten Tomatoes reported a 70% approval rating based on 33 critic reviews. The website's critics consensus reads, "A dense mystery with nods towards moral ambiguity, Better Sister is too derivative for its surprises to properly land but gets a dramatic lift from the appealing pairing of Elizabeth Banks and Jessica Biel." Metacritic, which uses a weighted average, gave a score of 56 out of 100 based on 13 critics, indicating "mixed or average".