Beginning her acting career at age 12 when she joined the Oldham Theatre Workshop, Thomason turned a hobby into a successful acting career, landing a procession of roles in a number of British television series including the BBC's "Burn It," "Brazen Hussies" with Julie Walters, "Pie in the Sky" and "Playing the field." She plays the role of "Ice Queen," also known as pit boss Nessa Holt, on NBC's new series "Las Vegas." Nessa Holt ("The Ice Queen") is the head pit boss, thought to be the best in Las Vegas, but has a shady past due to her father's connections with Ed Deline. She was raised by Ed and Jillian for some years. When the third season started, she had left Las Vegas and been given a new identity to be able to live with her father and long-lost sister.