Deidre Hall says she is far from done with "Days of Our Lives." She told People.com on Friday she will remain on the NBC soap. She is 78. Her run started in 1976. She said the reason is straightforward. She has one career goal she has not ticked off. 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 mark. She has been crucial to the show's engine for more than fifty years. No exit date is locked in. She just keeps showing up.