Netflix's new Monster season puts the 1892 Fall River murders on screen. Meet who plays each Borden, plus the famous killer who shows up in the mix.
Ella Beatty, the youngest child of Warren Beatty and Annette Bening, plays Lizzie, who was acquitted in 1893 of the ax murders of her father and stepmother.
Hunnam plays Andrew Borden, Lizzie's wealthy, frugal father. It's his second Monster season in a row after he starred as Ed Gein in 2025.
Rebecca Hall is Abby Borden, Lizzie's stepmother. Abby was killed first on Aug. 4, 1892, in the upstairs guest room, before Andrew died downstairs.
Billie Lourd plays Emma Borden, Lizzie's older sister. Emma was out of town visiting friends when the murders happened, and later lived with Lizzie for years.
Krieps is Bridget Sullivan, the Irish maid the Bordens called Maggie. The season builds on a long-told theory of a romance between her and Lizzie.
Krieps also plays Elizabeth Báthory, the Hungarian countess accused of killing young women around 1600. Ryan Murphy says he long wanted to tell her story.
Paulson plays Florida serial killer Aileen Wuornos, shown as a fan of Lizzie's case. She and Beatty became friends on Broadway in the play Appropriate.
Jessica Barden plays Nance O'Neil, the stage actress who became Lizzie's close friend. Joey Pollari is John Morse, the uncle staying here the day of the murders.
Ryan Murphy created Monster, and Ian Brennan runs this season. Critics are split: Rotten Tomatoes showed 50% from its first 12 reviews.
Every episode has been on Netflix since Sept. 17. The real Borden house, where the case began in 1892, still stands in Fall River today.