The Better Sister is a gripping psychological mystery thriller that combines murder, complicated family relationships and long-buried secrets. Released on Prime Video in May 2025, the eight-episode limited series is based on the bestselling novel by Alafair Burke and stars Jessica Biel as Chloe Taylor, alongside Elizabeth Banks as Nicky Macintosh and Corey Stoll as Adam Macintosh. What begins as a murder mystery gradually becomes a darker examination of sisterhood, betrayal, addiction and the secrets people keep to protect themselves and those they love.
The story follows Chloe, a successful media executive who appears to have built an almost perfect life with her lawyer husband, Adam, and teenage son, Ethan. Her estranged sister Nicky lives a very different life and has struggled with addiction and financial difficulties. Their complicated history becomes impossible to ignore when Adam is brutally murdered and the investigation begins uncovering disturbing secrets within the family. Forced back into each other’s lives, Chloe and Nicky must confront their painful past while attempting to understand what really happened to Adam.
Jessica Biel delivers a convincing performance as Chloe, presenting her as polished, intelligent and controlled while gradually revealing the emotional strain beneath her seemingly perfect life. Biel is particularly effective when the investigation begins threatening Chloe’s reputation and family. Her performance leaves viewers questioning how much Chloe knows and whether her version of events can always be trusted.
Elizabeth Banks provides an excellent contrast as Nicky. More unpredictable and emotionally exposed than Chloe, Nicky initially appears to be the troubled sister of the family. However, the series gradually challenges these first impressions. Banks brings vulnerability and intensity to the character, making the difficult relationship between the sisters one of the show’s strongest elements.
Although Adam’s murder drives the story forward, The Better Sister is equally interested in the psychological damage caused by years of resentment, jealousy and family secrets. As new information emerges, viewers are encouraged to reconsider what they previously believed about the characters. The series uses this uncertainty effectively, creating suspense through mistrust rather than relying entirely on action.
The show also explores the idea that appearances can be dangerously misleading. Chloe’s successful career and wealthy lifestyle create the impression of stability, while Nicky’s troubled history makes her easier to judge. As their past is revealed, however, the distinction between the supposedly “better” and “worse” sister becomes increasingly complicated. This moral uncertainty gives the series more depth than a straightforward murder mystery.
The Better Sister is an absorbing psychological thriller strengthened by Jessica Biel and Elizabeth Banks’ performances. Its combination of murder, deception, damaged family relationships and hidden truths creates a suspenseful story that repeatedly asks viewers to question who they can trust. While some elements of the mystery are familiar, the complicated bond between the two sisters gives the series an emotional edge and makes it a worthwhile watch for fans of dark family dramas and psychological mysteries.
RATINGS:
IMDb: 7/10
Rotten Tomatoes: 69%
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