Marsha Lisa Thomason Sykes

Marsha Thomason

Marsha Thomason emerged as a notable British actress in the US entertainment landscape through her significant roles in two pivotal projects. She captured audiences as a captivating casino worker opposite James Caan in “Las Vegas” and as a fiercely ambitious mercenary in the critically acclaimed “Lost.” Beyond her television success, Thomason has also made her mark in feature films and remains active in the industry.

What we know about this person

Full name:

Marsha Lisa Thomason Sykes

Date of birth:

January 19, 1976

Zodiac sign:



Manchester, United Kingdom





Marital status:

Married to Craig Sykes




5' 8" (1.73 m)


139 lbs (63 kg)



Early career

Born and raised in Manchester, Marsha Lisa Thomason Sykes’s family background was quite removed from the world of acting; her father, Peter Thomason, was entrenched in politics, while her mother, Phyllis, was employed at an electrical engineering firm. Marsha’s fascination with the dramatic arts took root in college, where her studies spanned theater and media alongside earning a bachelor’s degree in the English language. Acting became more than just an educational pursuit for Marsha; it evolved into a passionate hobby.

By the age of 18, in 1994, Thomason landed her first role as a nurse in the drama “Priest,” a film that boldly addressed the then-controversial topics of religion and homosexuality. In the ensuing half-decade, Marsha found herself in the six-episode series “Love in the 21st Century,” featuring Colin Farrell, and edged towards a phase of broader professional acclaim.


Evangeline Lilly and Marsha Thomason in Lost


Marsha Thomason’s collaboration with notable talents such as Ralph Ineson, Jo McInnes, Melanie Hill, Lorraine Ashbourne, Chris Walker, Ricky Tomlinson, and Elizabeth Spriggs, notably in “Playing the Field,” alongside her role in the drama “Burn It” (with William Ash, Lisa Faulkner, Ian McKee), elevated her profile among UK viewers. Her foray into the American film industry came in 2001 with “Black Knight,” featuring Martin Lawrence, where Thomason was cast in the principal female role.

By 2002, Thomason had appeared alongside Keira Knightley in “Pure” and the following year, portrayed the spouse of Eddie Murphy’s character in the comedy “The Haunted Mansion.” Subsequently, Thomason contributed to 47 episodes across the first two seasons of “Las Vegas” (alongside Josh Duhamel, James Lesure, Vanessa Marcil, Molly Sims, among others) before opting to exit the series. 2003 saw the release of “My Baby’s Daddy,” a commercially successful comedy produced by Bob Weinstein, in which she starred.

A trio of Thomason’s early roles, marked by their criminal storylines, somewhat shaped her career trajectory and typecast. Yet, her body of work continues to be varied, with frequent returns to crime dramas over the next two decades, spanning from her initial surge in popularity to today.


Marsha Thomason in The Haunted Mansion

Marsha Lisa Thomason Sykes Movies and TV Shows

  • 2018–2022

    Magnum P.I.


  • 2017–...

    The Good Doctor

    Dr. Isabel Barnes

  • 2011–2017

    2 Broke Girls


  • 2009–2014

    White Collar

    Diana Berrigan

  • 2009–...

    NCIS: Los Angeles

    Nicole Dechamps

  • 2007–2009

    Jill Abrahams


  • 2005–2017


    Amy Bryan

  • 2004–2010


    Naomi Dorrit

  • 2003

    The Haunted Mansion

    Sara Evers / Elizabeth Henshaw

  • 2001

    Black Knight

    Victoria / Nicole


Marsha Thomason in White Collar


Due to her close relationship with Dominic Monaghan (Charlie Pace in “Lost”), Thomason was an avid viewer from the outset and quickly became a fervent admirer of the series. Her excitement was palpable when offered a role in the third season, joining a cast that included Matthew Fox, Evangeline Lilly, Dominic Monaghan, and Daniel Dae Kim. For Thomason, this opportunity represented both a personal and professional milestone.

In the show, Thomason portrayed Naomi Dorrit throughout its third season, released in 2007, and made sporadic appearances in the fifth season. Thomason shared that deciphering her character’s motives posed a significant challenge, as the narrative demanded adherence to the script, leaving the actors in the dark about future plot twists.

Marsha Thomason’s personal life and family

Marsha Thomason tied the knot with lighting technician Craig Sykes, celebrating their union in Malibu in 2009. Their family grew with the birth of their daughter, Tallulah Anaïs Sykes, in 2013. During an interesting turn of events, Marsha found herself filming for the fifth season of “White Collar” while expecting her first child. Instead of exiting her role, the show’s creators cleverly integrated her pregnancy into the plot, featuring a story arc about a pregnancy through a donor.

For many years, Thomason resided in Los Angeles, but as recent as 2022, she has made her way back to her roots, now living and working in her native land. Thomason prefers to keep her personal life away from the limelight, although she and her family are occasionally spotted at family-oriented functions, revealing a slice of her life to her admirers. A known supporter of Manchester City football club, Thomason’s loyalty to her team is well documented.


Actress Marsha Thomason


Marsha Thomason with husband and daughter

Marsha Thomason now

After securing a string of significant roles in various American television series and films, Thomason ventured back to the UK to lead in the third season of the gripping series “The Bay,” revisiting the detective narrative she’s familiar with. Previously, she made appearances in the latest installment of “MacGyver” starring Lucas Till and the comedy-drama “Better Things.”

To the gaming community, Thomason is recognized for lending her voice to Diana Burnwood, the stealthy orchestrator in Hitman’s fifth installment (2012). Reflecting on her expansive career, Thomason fondly recalls her early days in theater—a pastime that, by her account, propelled her towards her professional calling, transforming the Manchester native into the Marsha Thomason celebrated today.

Published: April 10, 2024
Updated: May 30, 2024