Megan Gallagher's 'All Her Fault': A Gripping Dive into Motherhood's Dark Side
By Editor • August 15, 2026 • 3 min read
Megan Gallagher has made a name for herself as a master of adaptation, and her latest work, 'All Her Fault,' showcases her talent. The series, which became Peacock’s most-watched original show with an impressive 46 million hours viewed in its initial three weeks, is based on Andrea Mara’s acclaimed novel. It stars Sarah Snook as Marissa, a mother grappling with the horrifying disappearance of her son, Milo, played by Duke McCloud. As the narrative unfolds, dark secrets about Marissa's husband, Peter (Jake Lacy), and their circle emerge, weaving a complex web of suspicion and emotional turmoil.
Gallagher's direction goes beyond mere thrills; it opens a dialogue about the often overlooked struggles of motherhood, particularly the feelings of isolation that can accompany parenting in a partnered relationship. Gallagher explains, "I wanted to explore the unspoken realities that many women face, particularly those who feel like single mothers even when they have a partner." This theme resonated deeply with audiences and sparked significant conversations on social media.
Initially, Snook was hesitant to take on the role, but Gallagher’s assurance of filming in Australia swayed her decision. Gallagher recognized that portraying a mother in deep trauma required an exceptional actress—someone capable of conveying the nuances of grief beyond just tears. “I wanted an actress who could handle all that,” Gallagher noted, emphasizing the importance of emotional depth in the character of Marissa.
One of the most intriguing aspects of 'All Her Fault' is its translocation from Dublin to Chicago, despite the series being shot in Melbourne. Gallagher, who is American but resides in Norway, explained that the story's universal themes made the shift feasible. "We wanted Chicago because it represents Middle America—more relatable than cities with strong personalities like New York or L.A.,” she said.
In adapting the story, Gallagher also made a conscious choice to enrich the narrative with positive male representation, particularly through the character of Detective Alcaras, played by Michael Peña. This decision stemmed from Gallagher's personal experiences and her desire to depict a father who actively participates in family life amidst the chaos. “It felt like the right thing to do,” she shared, illustrating a balanced portrayal of parenting.
The series has sparked notable discussions about the realities of motherhood, with Gallagher revealing that she anticipated a strong response but was pleasantly surprised by the extent of its impact. “I knew it would resonate with women, but I didn’t realize how deeply,” she reflected. Social media buzz has highlighted the authenticity of the portrayals, with one comment on TikTok remarking on the depiction of two ineffective husbands who weren't involved in affairs—illustrating a fresh take on familial challenges.
As for the series' conclusion, Gallagher asserts that the ending was always intended to align closely with the book. “We never considered alternate endings because the original had such a powerful resolution,” she explained, crediting Mara’s storytelling prowess. The series maintains a gripping narrative arc that culminates in a satisfying and dramatic finale.
Looking ahead, Gallagher is set to adapt another of Mara’s works, 'Such a Nice Girl,' which promises to delve into the complexities of female friendships across generations. This upcoming project is described as a tightly woven thriller centered around a crime involving the daughters of two best friends, further exploring themes of connection and conflict.
Source: www.hollywoodreporter.com
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