Walker was born in Tullahoma, Tennessee, to James Joseph Walker, a physicist, and Louhannah (née Mann) who would become an attorney. She grew up in Santa Fe, New Mexico, where her father worked at the Los Alamos Nat… See more

In early 1988, Walker joined the cast of NBC daytime soap opera Santa Barbara, playing Andrea Bedford. Later that year, she began appearing on primetime television. During the 1989–90 television season, she played the f… See more

On June 14, 1997, Walker married John Landgraf, then a producer for NBC, at her parents' home in Santa Fe, New Mexico. The couple have three sons: Walker, Will, and Cal. She has a sister named Elizabeth and a broth… See more