Home / Arts and Entertainment / Peacock's 'All Her Fault' Adaptation Deviates from Novel, Adds Thrilling Twists
Peacock's 'All Her Fault' Adaptation Deviates from Novel, Adds Thrilling Twists
9 Nov, 2025
Summary
- Peacock's 'All Her Fault' series based on Andrea Mara's novel
- Significant changes made to characters Brian and Lia for the TV adaptation
- Expanded storylines around Lia's past and Brian's disability
Peacock's new mystery series 'All Her Fault', which premiered in November 2025, is based on a novel by Andrea Mara. However, the TV adaptation has made several significant changes to the original story.
The show follows a mother named Marissa (Sarah Snook) whose son, Milo, disappears during his first playdate. As the search for Marissa's child uncovers secrets about those closest to her, the series has introduced new twists and turns that were not present in the book.
One of the most notable differences is the way the show has developed the characters of Brian and Lia. In the novel, Brian seemed unrecognizable from the version written by Megan, the show's creator. Similarly, Lia was largely out of the picture in the book, as she was living in New York while the Irvine family was in Dublin (which was changed to Chicago for the TV series).
