In 2007, she joined the cast of "24", as . In June 2007, Matchett played Kate Armstrong in the TNT series "Heartland". In 2007 and 2008, Matchett was cast as ER chief Skye Wexler on "ER". In 2008 and 2009, she played Dennis Hopper's character's daughter, Jules, in the critically acclaimed Starz series "Crash". She had a recurring role in the TNT series "Leverage", reuniting with "Nero Wolfe" co-star Timothy Hutton, portraying Maggie Collins, the ex-wife of Hutton's character, Nathan "Nate" Ford. Matchett starred as Joan Campbell in the USA Network series "Covert Affairs" (2010–2014).