Prime Video’sThe Better Sisterhas an incredibly talented and famous cast of actors to bring the award-winning book into live-action.The Better Sisterfocuses on a murder and its ensuing investigation that brings two estranged sisters back into contact. Once they reunite, a web of secrets, mysteries, and lies begins to unravel, and all the memories the sisters would rather forget come rushing back.Reviews forThe Better Sisterhave praised the complicated conspiracy thriller story, but they have also highlighted the show’s large cast of colorful characters who are expertly portrayed.

It’s because of that talented cast thatThe Better Sistercould easily become one of thebest TV shows on Prime Video. Each player inThe Better Sister’s winding tale of deception and murder handles their role extremely well. It’s also worth noting that the central sisters - played by Jessica Biel and Elizabeth Banks - are exceptionally well cast, both in terms of their looks and their dynamic as siblings. The talent only continues past the two sisters, though, and the entire cast ofThe Better Sisteris worth getting to know - if you don’t know them already.

Maxwell Acee Donovan as Ethan Macintosh in The Better Sister season 1, episode 1

Jessica Biel as Chloe Taylor

Date of Birth: July 13, 2025

Actor: Jessica Biel was born in Ely, Minnesota.Biel had her breakthrough role extremely early in her career, when she was cast as Mary Camden in7th Heavenin 1996. She would continue to play the leading role until 2006. Biel then had a very active career in the early 2000s and 2010s: she starred in remakes of bothThe Texas Chainsaw MassacreandTotal Recall, as well as the original movieThe Illusionist. More recently, Biel has turned to voice acting in shows likeBoJack HorsemanandPete the Cat, and live-action TV shows likeLimetownandCandy.

The Texas Chainsaw Massacre (2003)

Erin

Character: Jessica Biel plays Chloe Taylor inThe Better Sister. Chloe is the editor-in-chief of The Real Thing magazine, the partner of Adam Macintosh and adoptive mother of Ethan, and the sister of Nicky Macintosh. Chloe receives death threats after supporting feminist causes publicly. After Chloe discovers Adam’s murdered body, her entire world turns upside down.

Elizabeth Banks as Nicky Macintosh

Date of Birth: July 14, 2025

Actor: Elizabeth Banks was born in Pittsfield, Massachusetts.Banks had her breakthrough role in Sam Raimi’sSpider-Man, where she played Betty Brant, in 2002. Since then, Banks has continued to play iconic characters and contribute to wildly popular movies and shows. She had recurring roles in bothScrubsand30 Rock, and she gained newfound popularity by portraying Effie Trinket in theHunger Gamesmovies. More recently, Banks has been starring in movies likeSkincare,A Mistake, and even voice acting roles like inMigration.

Scrubs

Dr. Kim Briggs

Character: Elizabeth Banks plays Nicky Macintosh inThe Better Sister. Nicky is the ex-wife of Adam, biological father of Ethan, and sister of Chloe. Nicky has a substance-misuse problem that caused many of the problems she faces in her personal life, but she remained as Ethan’s legal guardian. After Adam’s murder, she returns to New York to be with what remains of her family.

Corey Stoll as Adam Macintosh

Date of Birth: June 11, 2025

Actor: Corey Stoll was born in New York City, New York.Stoll had his breakthrough role in 2011, when he played Ernest Hemingway in Woody Allen’sMidnight in Paris. Since then, Stoll’s career has only continued to get more popular. He joined the Marvel Cinematic Universe inAnt-Manas Yellowjacket and later M.O.D.O.K., he starred in several notable TV shows likeHouse of CardsandBillions, and he has a working relationship with director Zack Snyder, as Stoll has appeared in bothRebel MoonandTwilight of the Gods.

Billions

Mike Prince

Character: Corey Stoll plays Adam Macintosh inThe Better Sister. Adam was formerly married to Nicky, though he began a relationship with her sister, Chloe, after divorcing her. Adam is murdered in the first episode ofThe Better Sister, which acts as the impetus for the show’s investigation into Chloe’s long-held secrets.

Kim Dickens as Nancy Guidry

Date of Birth: July 10, 2025

Actor: Kim Dickens was born in Huntsville, Alabama.Dickens had her breakthrough role inDeadwood, where she played Joanie Stubbs for all three seasons and the 2019 movie. Since then, Dickens has had a number of notable movie and TV appearances, including inHouse of Cards,Sons of Anarchy, andGone Girl, where she played another detective. Dickens' most famous work sinceDeadwoodis likelyFear the Walking Dead, where she played Madison Clark for six seasons.

Thank You for Smoking

Jill Naylor

Character: Kim Dickens plays Nancy Guidry inThe Better Sister. Nancy is a police detective investigating Adam Macintosh’s murder, and she instantly suspects Chloe and her son. Nancy also serves as her partner, Bobby’s, mentor as he learns the ropes of murder investigations.

Maxwell Acee Donovan as Ethan Macintosh

Date of Birth: July 22, 2025

Actor: Maxwell Acee Donovan was born in the United States.Donovan’s breakthrough role came in 2019, when he began playing Wesley inGabby Duran & The Unsittables. Prior to that, Donovan had been a child actor since he was 10 years old. He had roles in several shows likeThe Thundermansand movies likeWar Dogs. More recently, Donovan is best known for playing Nate on Netflix’sThat ’90s Show.Donovan even spoke toScreen Rantduring an installment of “Debunking AI.”

The Better Sister

Ethan Macintosh

Character: Maxwell Acee Donovan plays Ethan Macintosh inThe Better Sister. Ethan is the biological son of Adam and Nicky, but he lives with Chloe as his adoptive mother.

The Better Sister Supporting Cast & Characters

Bobby Naderi as Matt Bowen: Bobby Naderi plays Matt Bowen inThe Better Sister. Matt is the detective partner of Nancy on the police force, and he has a less refined approach to murder investigations. Naderi is known for movies likeBrightandThe Beekeeper.

Lorraine Toussaint as Catherine Lancaster: Lorraine Toussaint plays Catherine Lancaster inThe Better Sister. Catherine is one of Chloe’s friends from her publishing job, and she helps her with the press following Adam’s murder. Toussaint is known for shows likeAny Day Nowand movies likeSelma.

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Matthew Modine as Bill Braddock: Matthew Modine plays Bill Braddock inThe Better Sister. Bill is another of Chloe’s friends in the high society of New York, and they regularly attend parties together. Modine is known for movies likeFull Metal JacketandThe Dark Knight Rises.