Caitlin FitzGerald Bio
Caitlin FitzGerald is an American actress and filmmaker whose television work has earned her a devoted following on both sides of the Atlantic. She first drew widespread notice as Libby Masters in the Showtime period drama Masters of Sex (2013–2016) and later starred as Simone in the Starz series Sweetbitter (2018–2019). Trained at NYU’s Tisch School of the Arts and the Royal Academy of Dramatic Art in London, FitzGerald has built a career that balances independent film, prestige television, and classical stage work. She continues to divide her professional time between the United States and the United Kingdom.
Early Life and Background
Caitlin FitzGerald was raised in Camden, Maine, the daughter of Des FitzGerald, an Irish American businessman who served as a former CEO of the ContiSea unit of ContiGroup and founded Ducktrap River Fish Farm Inc., and Pam Allen, an author known for writing Knitting for Dummies and for founding the yarn company Quince & Co. Growing up in a coastal New England household gave her an early appreciation for storytelling and the rhythms of small-town life, influences that later surfaced in her own screenwriting.
As a child, FitzGerald discovered a passion for acting through community theatre and school productions, performing in plays throughout her youth. She later attended Concord Academy in Massachusetts, graduating in 2002, and went on to study drama at NYU’s Tisch School of the Arts, where she trained at the Stella Adler Studio of Acting. Determined to round out her classical training, she also spent time at the Royal Academy of Dramatic Art in London, studying Shakespeare and sharpening the stage technique that would later define her theatrical work.
Path to Acting
After completing her formal education, FitzGerald moved into early screen work, picking up supporting roles in projects including Love Simple and the romantic comedy It’s Complicated. She made brief but memorable appearances in popular series such as Gossip Girl and Blue Bloods, gradually building a résumé that spanned independent film and network television. These early credits allowed her to work with a range of established directors while she refined her craft on sets of varying scale.
In 2010, FitzGerald stepped into one of the most demanding stage roles of her career, starring in a production of Henrik Ibsen’s Hedda Gabler. The play was staged in a private New York City residence before an audience of just twenty-five people, and The New York Times critic Ben Brantley praised her, calling her a hypnotic pleasure to look at while noting her striking features and on-screen presence. That same year, she played Benita in an episode of the CBS crime drama Blue Bloods, demonstrating her range across formats. The experience marked a turning point, confirming her ability to anchor both intimate theatre and mainstream television.
Caitlin FitzGerald Career
Early Career (2008–2012)
FitzGerald’s professional career began in 2008, and her early years were defined by a steady accumulation of film and television credits. She appeared in Whit Stillman’s comedy Damsels in Distress in 2011, contributing to a critically discussed ensemble that helped introduce her to wider arthouse audiences. The role gave her the chance to work within a distinctive directorial voice and signalled her comfort with stylized, dialogue-driven material.
In 2012, she starred in and co-wrote the independent film Like the Water, set in Maine and inspired by the sudden death of her childhood classmate Sabrina Seelig. That same year, she reunited with director Edward Burns for the holiday drama The Fitzgerald Family Christmas. These projects demonstrated her growing commitment to filmmaking as well as performing, foreshadowing her later identity as both actress and filmmaker.
Breakthrough (2013–2019)
FitzGerald’s breakthrough arrived in 2013 when she was cast as Libby Masters in the Showtime drama Masters of Sex, a role she would inhabit across the series’ run from 2013 to 2016. IndieWire praised her work, describing Libby as a character who could easily have seemed insipid but instead emerged as likable and poignant under FitzGerald’s careful performance. Her ability to convey both fragility and quiet perceptiveness earned her recognition as one of the most underrated performers in the ensemble.
In 2013, she also starred as Liv in the independent romantic comedy Mutual Friends, directed by Matthew Watts, expanding her film footprint beyond prestige television. The following year brought the indie comedy Adult Beginners in 2015, where she played Kat, the girlfriend of a character portrayed by Nick Kroll, opposite Rose Byrne and Bobby Cannavale. In 2017, she joined the cast of The Man Who Killed Hitler and Then the Bigfoot, directed by Robert Krzykowski and co-starring Sam Elliott and Aidan Turner, further diversifying her screen portfolio.
In 2018, FitzGerald took on the role of Simone in Starz’s Sweetbitter, a character that allowed her to explore the world of New York hospitality with nuance and intensity. That same year, she appeared in the third season of UnREAL, playing Serena, the star of a fictional reality dating show. The role mirrored the conventions of The Bachelorette and required her to play a public-facing figure negotiating vulnerability and performance, a fitting challenge for an actress long drawn to layered characters.
Notable Works and Milestones
Across her career, Caitlin FitzGerald has become known for the kind of understated, character-driven work that anchors ensemble dramas, with Masters of Sex and Sweetbitter standing as her most recognized television achievements. Her film work spans the quirky Damsels in Distress, the personal indie Like the Water, and the genre-bending The Man Who Killed Hitler and Then the Bigfoot, illustrating her range across tone and format. In 2025, she returned to the stage in Othello at the Theatre Royal Haymarket in London, earning praise for her portrayal of Desdemona, which projected a smooth blend of strength and fearlessness. The performance underscored her enduring commitment to classical theatre alongside her screen career.
Caitlin FitzGerald Family
Caitlin FitzGerald comes from a creative and entrepreneurial family. Her father, Des FitzGerald, is an Irish American businessman who led the ContiSea unit of ContiGroup and founded Ducktrap River Fish Farm Inc. Her mother, Pam Allen, is the author of Knitting for Dummies and the founder of the yarn company Quince & Co. The couple raised Caitlin in Camden, Maine, where her mother’s writing and her father’s business ventures shaped a household that valued both craft and enterprise.
Personal Life
In 2017, FitzGerald met Irish actor Aidan Turner, and the two married in August 2020. She gave birth to their son in January 2022, and the family maintains an 18th-century house in East London. FitzGerald continues to balance her American roots with her life in the United Kingdom, working across both film markets while raising her family.