The case of the human remains found on Queen Elizabeth's Sandringham Estate has officially become a real-life Masterpiece Mystery. Yesterday police said the remains belong to a young woman and have been lying in the forest for one to four months. Inspectors say she was probably murdered, and may be foreign. The estate is 20,000 acres and sections are open to the public, so it's not quite the same as a crime occurring in the Queen's backyard. However, if you'd like to believe the Queen came this close to playing Miss Marple, the royal family was only yards from the body when they went on a pheasant shoot during the holidays.