In the first episode of a special two-part investigation, Mr Jim Moon ventures into the darkest part of the woods to investigate a most mysterious unsolved case. In 1943, some boys made a most macabre discovery in Hagley Woods, near Birmingham - the skeleton of a woman buried within a hollow tree.

Who was she? Was this murder? Was witchcraft involved? And who was responsible for the cryptic graffiti that began to appear - "Who put Bella down the wych elm?"