She portrayed Valerie Ewing on thirteen seasons of Knots Landing and appeared on the series Dallas.
She decided to pursue a career in acting after interviewing Actress Julie Harris at age fifteen.
Seh was named after Joan of Arc because her dad knew she was going to be a star.
She married John Marshall in 1966; the couple welcomed daughter Vanessa in 1969.
She starred with Alec Baldwin in Knots Landing.
