Marsha Thomason is a British actress who has established herself in Hollywood, thanks to her roles as Nessa Holt on Las Vegas, Naomi Dorrit on Lost and Diana Barrigan on White Collar, in which she is now a series regular. She enrolled at Oldham Sixth Form College to pursue Media Studies, Theatre Studies and Performing Arts before earning her degree in English at the Manchester Metropolitan University. Additionally, she trained at the Oldham Theatre Workshop, which exposed her to various theatre productions and eventually led her to pursue acting professionally.
After gaining exposure in the British television circuit through her work in Burn It, Playing the Field and Where The Heart Is, Thomason landed the role of Eddie Murphy's wife in The Haunted Mansion. This was followed by My Baby's Daddy, Caffeine, and LA Blues. Simultaneously, she also appeared as a main cast member of the TV series Las Vegas.
After Las Vegas was canceled, Thomason remained active in the spotlight with her roles on Lost, Easy Money, General Hospital, Make It or Break It and White Collar.