Kellie Martin (born October 16, 1975) is an American actress. She is known for her roles as Rebecca "Becca" Thatcher in Life Goes On (1989–1993), Lucy Knight on ER (1998–2000), Samantha Kinsey in the Mystery Woman TV film series (2003–2007), and as Hailey Dean in the Hailey Dean Mystery TV film series (2016–2019). Early life Martin began her acting career at age seven, when her aunt who was a nanny for actor Michael Landon's children helped her land a guest spot on the Landon-produced series Father Murphy. At the age of 11, she was a contestant during Young People's Week on the Bob Eubanks-hosted version of Card Sharks. Career Early years Martin had a recurring role on season three of Valerie's Family: The Hogans (1987–1988). She also contributed the voice of Daphne Blake on the animated series A Pup Named Scooby-Doo in 1988–1991. In 1989, Martin began the role of Rebecca "Becca" Thacher on the family drama Life Goes On, which ran on ABC for four seasons. She also played the role of Emily in 1989's Troop Beverly Hills, starring Shelley Long. Martin also co-hosted the 1989 pilot of America's Funniest Home Videos alongside Bob Saget. 1990s From 1991 to 1995, Martin supplied the voice of Molly Tasmanian Devil on Taz-Mania. In 1993, she played Sherry in Matinee, and made a guest appearance as Cleo Walker on an episode of seaQuest DSV, titled "Brothers and Sisters". In 1994, she starred in her own series, Christy. Also in 1994, she starred in the Lifetime movie A Friend to Die For. In 1995, she starred in The Face on the Milk Carton, a TV film based on the book by Caroline Cooney about a teenager who finds out she was kidnapped from her real family 13 years prior and had been raised by the parents of her kidnapper. She was in A Goofy Movie as the voice of Roxanne, Max's love interest. In 1996, Martin starred as deaf abuse-victim Laura Keyes on Lifetime's TV movie After the Silence (or Breaking Through). She starred in a made for TV movie Hidden in Silence (Lifetime Television). From 1998–2000, Martin appeared on the medical drama ER as medical student Lucy Knight. Martin was still going to Yale at the time and postponed her education so that she could join the cast. When she left ER, she stopped acting for three years and returned to Yale