Who Put Bella In The Wych Elm? (S01E04)

In a chilling story, the skeleton of an unidentified woman is discovered inside a hollow tree in a Birmingham forest. As investigators dig deeper into this enigma, they uncover connections between the woman and Nazi espionage networks that were active in Britain's industrial core. Despite the apparent disappearance of both the remains and police records, interviews with individuals linked to the case, along with insights from facial reconstruction specialists, help reconstruct the identity of the enigmatic figure hidden within the tree.