Ferrin played the younger version of Vanessa Redgrave's character Esther in the Hallmark Hall of Fame film "The Locket". She guest starred in the 2002 season finale of "Dawson's Creek". Ferrin's most notable role to date is that of Jennifer Munson Kasnoff Donovan on the daytime soap opera "As the World Turns", played from 2003 to 2006. In 2006, she landed a recurring role on the primetime show "3 LBS". Ferrin was one of the four actors starring in the US premiere productions of "The 39 Steps", Patrick Barlow's stage adaptation of the Alfred Hitchcock film, in Boston in 2007 and New York in 2008