Deidre Hall says she is not finished with "Days of Our Lives." She told People.com on Friday she will stay on the NBC soap. She is 78. Her run started in 1976. She said the reason is simple. She has one career goal she still has not reached. She did not say what that goal is. The Independent picked up her public pledge to keep playing Dr. Marlena Evans. Hall holds a rare distinction. She has been key to the show's engine for more than fifty years. No exit date is locked in. She just keeps going to work.